Naming rules and restrictions for Azure resources

This article summarizes naming rules and restrictions for Azure resources. For recommendations about how to name resources, see Recommended naming and tagging conventions.

This article also lists resources by resource provider namespace. For a list of how resource providers match Azure services, see Azure resource providers for Azure services.

Märkus

Resource and resource group names are case-insensitive unless specifically noted in the Valid Characters column.

When using various APIs to retrieve the name for a resource or resource group, the returned value might have different casing than what you originally specified for the name. The returned value could also display different case values than what is listed in the Valid Characters column.

Always perform a case-insensitive comparison of names.

In the following tables, the term alphanumeric refers to:

• a through z (lowercase letters)
• A through Z (uppercase letters)
• 0 through 9 (numbers)

Märkus

Resources with a public endpoint can't include reserved words or trademarks in the name. For a list of blocked words, see Resolve reserved resource name errors.

Don't use # in a resource name since this interferes with URL parsing during Azure Resource Manager requests.

Microsoft.AnalysisServices

Entity	Scope	Length	Valid Characters
servers	resource group	3-63	Lowercase letters and numbers Start with a lowercase letter.

Microsoft.ApiManagement

Entity	Scope	Length	Valid Characters
service	global	1-50	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / issues	api	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / issues / attachments	issue	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / issues / comments	issue	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / operations	api	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / operations / tags	operation	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / releases	api	1-80	Alphanumerics, underscores, and hyphens Start and end with alphanumeric or underscore.
service / apis / schemas	api	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / tagDescriptions	api	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / apis / tags	api	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / api-version-sets	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / authorizationServers	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / backends	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / certificates	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / diagnostics	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / groups	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / groups / users	group	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / identityProviders	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / loggers	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / notifications	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / notifications / recipientEmails	notification	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / openidConnectProviders	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / policies	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / products	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / products / apis	product	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / products / groups	product	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / products / tags	product	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / properties	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / subscriptions	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / tags	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / templates	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
service / users	service	1-80	Alphanumerics and hyphens Start with a letter and end with alphanumeric.

Microsoft.App

Entity	Scope	Length	Valid Characters
containerApps	resource group	2-32	nLowercase letters, numbers, and hyphens Start with a letter and end with alphanumeric.

Microsoft.AppConfiguration

Entity	Scope	Length	Valid Characters
configurationStores*	global	5-50	Alphanumerics and hyphens Can’t contain a sequence of more than two hyphens. Can’t start with or end with a hyphen.
configurationStores / replicas	configurationStore	1-50 The combined length of the configurationStore name and the replica name can’t exceed 60 characters.	Only alphanumerics are valid.

* {storeName}-{replicaName} needs to be globally unique.

Microsoft.AppPlatform

Entity	Scope	Length	Valid Characters
spring	global	4-32	Lowercase letters, numbers, and hyphens

Microsoft.Authorization

Entity	Scope	Length	Valid Characters
locks	scope of assignment	1-90	Alphanumerics, periods, underscores, hyphens, and parentheses Can't end in period.
policyAssignments	scope of assignment	1-128 display name 1-64 resource name 1-24 resource name at management group scope	Display name can contain any characters. Resource name can't use: #<>%&:\?/ or control characters. Can't end with period or space.
policyDefinitions	scope of definition	1-128 display name 1-64 resource name	Display name can contain any characters. Resource name can't use: #<>%&:\?/ or control characters. Can't end with period or space.
policyExemptions	scope of exemption	1-128 display name 1-64 resource name	Display name can contain any characters. Resource name can't use: #<>%&:\?/ or control characters. Can't end with period or space.
policySetDefinitions	scope of definition	1-128 display name 1-64 resource name	Display name can contain any characters. Resource name can't use: #<>%&:\?/ or control characters. Can't end with period or space.
roleAssignments	tenant	36	Must be a globally unique identifier (GUID).
roleDefinitions	tenant	36	Must be a GUID.

Microsoft.Automation

Entity	Scope	Length	Valid Characters
automationAccounts	resource group & region (See note below)	6-50	Alphanumerics and hyphens Start with a letter and end with alphanumeric.
automationAccounts / certificates	automation account	1-128	Can't use: <>*%&:\?.+/ or control characters Can't end with space.
automationAccounts / connections	automation account	1-128	Can't use: <>*%&:\?.+/ or control characters Can't end with space.
automationAccounts / credentials	automation account	1-128	Can't use: <>*%&:\?.+/ or control characters Can't end with space.
automationAccounts / runbooks	automation account	1-63	Alphanumerics, underscores, and hyphens Start with a letter.
automationAccounts / schedules	automation account	1-128	Can't use: <>*%&:\?.+/ or control characters Can't end with space.
automationAccounts / variables	automation account	1-128	Can't use: <>*%&:\?.+/ or control characters Can't end with space.
automationAccounts / watchers	automation account	1-63	Alphanumerics, underscores, and hyphens Start with a letter.
automationAccounts / webhooks	automation account	1-128	Can't use: <>*%&:\?.+/ or control characters Can't end with space.

Märkus

Automation account names are unique per region and resource group. Names for deleted Automation accounts might not be immediately available.

Microsoft.AVS

Entity	Scope	Length	Valid Characters
privateClouds	resource group	1-80	Alphanumerics, periods, hyphens, and underscores Start with alphanumeric and end with alphanumeric or underscore.

Microsoft.Batch

Entity	Scope	Length	Valid Characters
batchAccounts	Region	3-24	Lowercase letters and numbers
batchAccounts / applications	batch account	1-64	Alphanumerics, underscores, and hyphens
batchAccounts / certificates	batch account	5-45	Alphanumerics, underscores, and hyphens
batchAccounts / pools	batch account	1-64	Alphanumerics, underscores, and hyphens

Microsoft.Blockchain

Entity	Scope	Length	Valid Characters
blockchainMembers	global	2-20	Lowercase letters and numbers Start with lowercase letter.

Microsoft.Blueprint

Entity	Scope	Length	Valid Characters
blueprint	Management groups, Subscriptions, Resource groups	90	Alphanumerics, underscores, and hyphens
blueprintAssignments	Management groups, Subscriptions, Resource groups	90	Alphanumerics, underscores, and hyphens

Microsoft.BotService

Entity	Scope	Length	Valid Characters
botServices	global	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric.
botServices / channels	bot service	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric.
botServices / Connections	bot service	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric.
enterpriseChannels	resource group	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric.

Microsoft.Cache

Entity	Scope	Length	Valid Characters
Redis	global	1-63	Alphanumerics and hyphens Start and end with alphanumeric. Consecutive hyphens not allowed.
Redis / firewallRules	Redis	1-256	Alphanumerics

Microsoft.Cdn

Entity	Scope	Length	Valid Characters
profiles	resource group	1-260	Alphanumerics and hyphens Start and end with alphanumeric.
profiles / endpoints	global	1-50	Alphanumerics and hyphens Start and end with alphanumeric.
profiles / originGroups	global	1-50	Alphanumerics and hyphens Start and end with alphanumeric.
profiles / originGroups / origins	global	1-50	Alphanumerics and hyphens Start and end with alphanumeric.
profiles / afdEndpoints / routes	global	1-50	Alphanumerics and hyphens Start and end with alphanumeric.

Microsoft.CertificateRegistration

Entity	Scope	Length	Valid Characters
certificateOrders	resource group	3-50	Alphanumerics

Microsoft.CognitiveServices

Entity	Scope	Length	Valid Characters
accounts	resource group	2-64	Alphanumerics and hyphens Start and end with alphanumeric.

Microsoft.Compute

Entity	Scope	Length	Valid Characters
availabilitySets	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
cloudservices	resource group	1-15 See note below.	Can't use spaces, control characters, or these characters: ~ ! @ # $ % ^ & * ( ) = + _ [ ] { } \ | ; : . ' " , < > / ? Can't start with underscore. Can't end with period or hyphen.
diskEncryptionSets	resource group	1-80	Alphanumerics, underscores, and hyphens
disks	resource group	1-80	Alphanumerics, underscores, and hyphens
galleries	resource group	1-80	Alphanumerics and periods Start and end with alphanumeric.
galleries / applications	gallery	1-80	Alphanumerics, hyphens, and periods Start and end with alphanumeric.
galleries / applications/versions	application	32-bit integer	Numbers and periods (Each segment is converted to an int32. So each segment has a max value of 2,147,483,647.)
galleries / images	gallery	1-80	Alphanumerics, underscores, hyphens, and periods Start and end with alphanumeric.
galleries / images / versions	image	32-bit integer	Numbers and periods Each segment is converted to an int32, so each segment has a max value of 2,147,483,647.
images	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
snapshots	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
virtualMachines	resource group	1-15 (Windows) 1-64 (Linux) See note below.	Can't use spaces, control characters, or these characters: ~ ! @ # $ % ^ & * ( ) = + _ [ ] { } \ | ; : . ' " , < > / ? Windows virtual machines can't include periods or end with hyphens. Linux virtual machines can't end with periods or hyphens.
virtualMachineScaleSets	resource group	1-15 (Windows) 1-64 (Linux) See note below.	Can't use spaces, control characters, or these characters: ~ ! @ # $ % ^ & * ( ) = + _ [ ] { } \ | ; : . ' " , < > / ? Can't start with underscore. Can't end with period or hyphen.

Märkus

Azure virtual machines have two distinct names: resource name and host name. When you create a virtual machine in the portal, the same value is used for both names. The restrictions in the preceding table are for the host name. The actual resource name can have up to 64 characters.

Microsoft.Communication

Entity	Scope	Length	Valid Characters
communicationServices	global	1-63	Alphanumerics and hyphens Can't start or end with hyphen. Can't use underscores.

Microsoft.ConfidentialLedger

Entity	Scope	Length	Valid Characters
ledgers	Resource group	3-32	Alphanumerics and hyphens Can't start or end with hyphen.

Microsoft.Consumption

Entity	Scope	Length	Valid Characters
budgets	subscription or resource group	1-63	Alphanumerics, hyphens, and underscores

Microsoft.ContainerInstance

Entity	Scope	Length	Valid Characters
containerGroups	resource group	1-63	Lowercase letters, numbers, and hyphens Can't start or end with hyphen. Consecutive hyphens aren't allowed.

Microsoft.ContainerRegistry

Entity	Scope	Length	Valid Characters
registries	global	5-50	Alphanumerics
registries / buildTasks	registry	5-50	Alphanumerics
registries / buildTasks/steps	build task	5-50	Alphanumerics
registries / replications	registry	5-50	Alphanumerics
registries / scopeMaps	registry	5-50	Alphanumerics, hyphens, and underscores
registries / tasks	registry	5-50	Alphanumerics, hyphens, and underscores
registries / tokens	registry	5-50	Alphanumerics, hyphens, and underscores
registries / webhooks	registry	5-50	Alphanumerics

Microsoft.ContainerService

Entity	Scope	Length	Valid Characters
managedClusters	resource group	1-63	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
managedClusters / agentPools	managed cluster	1-12 for Linux 1-6 for Windows	Lowercase letters and numbers Can't start with a number.

Microsoft.CustomerInsights

Entity	Scope	Length	Valid Characters
hubs	resource group	1-64	Alphanumerics Start with a letter.
hubs / authorizationPolicies	hub	1-50	Alphanumerics, underscores, and periods Start and end with alphanumeric.
hubs / connectors	hub	1-128	Alphanumerics and underscores Start with a letter.
hubs / connectors/mappings	connector	1-128	Alphanumerics and underscores Start with a letter.
hubs / interactions	hub	1-128	Alphanumerics and underscores Start with a letter.
hubs / kpi	hub	1-512	Alphanumerics and underscores Start with a letter.
hubs / links	hub	1-512	Alphanumerics and underscores Start with a letter.
hubs / predictions	hub	1-512	Alphanumerics and underscores Start with a letter.
hubs / profiles	hub	1-128	Alphanumerics and underscores Start with a letter.
hubs / relationshipLinks	hub	1-512	Alphanumerics and underscores Start with a letter.
hubs / relationships	hub	1-512	Alphanumerics and underscores Start with a letter.
hubs / roleAssignments	hub	1-128	Alphanumerics and underscores Start with a letter.
hubs / views	hub	1-512	Alphanumerics and underscores Start with a letter.

Microsoft.CustomProviders

Entity	Scope	Length	Valid Characters
associations	resource group	1-180	Can't use: %&\\?/ or control characters Can't end with period or space.
resourceProviders	resource group	3-64	Can't use: %&\\?/ or control characters Can't end with period or space.

Microsoft.DataBox

Entity	Scope	Length	Valid Characters
jobs	resource group	3-24	Alphanumerics, hyphens, underscores, and periods

Microsoft.Databricks

Entity	Scope	Length	Valid Characters
workspaces	resource group	3-64	Alphanumerics, underscores, and hyphens

Microsoft.DataFactory

Entity	Scope	Length	Valid Characters
factories	global	3-63	Alphanumerics and hyphens Start and end with alphanumeric.
factories / dataflows	factory	1-260	Can't use: <>*#.%&:\\+?/ or control characters Start with alphanumeric.
factories / datasets	factory	1-260	Can't use: <>*#.%&:\\+?/- or control characters Start with alphanumeric.
factories / integrationRuntimes	factory	3-63	Alphanumerics and hyphens Start and end with alphanumeric.
factories / linkedservices	factory	1-260	Can't use: <>*#.%&:\\+?/ or control characters Start with alphanumeric.
factories / pipelines	factory	1-260	Can't use: <>*#.%&:\\+?/ or control characters Start with alphanumeric.
factories / triggers	factory	1-260	Can't use: <>*#.%&:\\+?/ or control characters Start with alphanumeric.
factories / triggers / rerunTriggers	trigger	1-260	Can't use: <>*#.%&:\\+?/ or control characters Start with alphanumeric.

Microsoft.DataLakeAnalytics

Entity	Scope	Length	Valid Characters
accounts	global	3-24	Lowercase letters and numbers
accounts / computePolicies	account	3-60	Alphanumerics, hyphens, and underscores
accounts / dataLakeStoreAccounts	account	3-24	Lowercase letters and numbers
accounts / firewallRules	account	3-50	Alphanumerics, hyphens, and underscores
accounts / storageAccounts	account	3-60	Alphanumerics, hyphens, and underscores

Microsoft.DataLakeStore

Entity	Scope	Length	Valid Characters
accounts	global	3-24	Lowercase letters and numbers
accounts / firewallRules	account	3-50	Alphanumerics, hyphens, and underscores
accounts / virtualNetworkRules	account	3-50	Alphanumerics, hyphens, and underscores

Microsoft.DataMigration

Entity	Scope	Length	Valid Characters
services	resource group	2-62	Alphanumerics, hyphens, periods, and underscores Start with alphanumeric.
services / projects	service	2-57	Alphanumerics, hyphens, periods, and underscores Start with alphanumeric.

Microsoft.DataProtection

Entity	Scope	Length	Valid Characters
backupVaults	resource group	2-50	Alphanumerics and hyphens Start with a letter.
backupvaults / backupInstances	backup vault	1-75	Alphanumerics and hyphens
backupVaults / backupPolicies	backup vault	1-75	Alphanumerics and hyphens

Microsoft.DBforMariaDB

Entity	Scope	Length	Valid Characters
servers	global	3-63	Lowercase letters, hyphens, and numbers Can't start or end with hyphen.
servers / databases	servers	1-63	Alphanumerics and hyphens
servers / firewallRules	servers	1-128	Alphanumerics, hyphens, and underscores
servers / virtualNetworkRules	servers	1-128	Alphanumerics and hyphens

Microsoft.DBforMySQL

Entity	Scope	Length	Valid Characters
servers	global	3-63	Lowercase letters, hyphens, and numbers Can't start or end with hyphen.
servers / databases	servers	1-63	Alphanumerics and hyphens
servers / firewallRules	servers	1-128	Alphanumerics, hyphens, and underscores
servers / virtualNetworkRules	servers	1-128	Alphanumerics and hyphens

Microsoft.DBforPostgreSQL

Entity	Scope	Length	Valid Characters
servers	global	3-63	Lowercase letters, hyphens, and numbers Can't start or end with hyphens.
servers / databases	servers	1-63	Alphanumerics and hyphens
servers / firewallRules	servers	1-128	Alphanumerics, hyphens, and underscores
servers / virtualNetworkRules	servers	1-128	Alphanumerics and hyphens

Microsoft.DesktopVirtualization

Entity	Scope	Length	Valid Characters
applicationGroups	resource group	3-64	Alphanumerics, underscores, periods, and hyphens Start with a letter or number. End with letter, number, or underscore.
hostPools	resource group	3-64	Alphanumerics, underscores, periods, and hyphens Start with a letter or number. End with letter, number, or underscore.
workspaces	resource group	3-64	Alphanumerics, underscores, periods, and hyphens Start with a letter or number. End with letter, number, or underscore.

Microsoft.Devices

Entity	Scope	Length	Valid Characters
IotHubs	global	3-50	Alphanumerics and hyphens Can't end with hyphen.
IotHubs / certificates	IoT hub	1-64	Alphanumerics, hyphens, periods, and underscores
IotHubs / eventHubEndpoints / ConsumerGroups	eventHubEndpoints	1-50	Alphanumerics, hyphens, periods, and underscores
provisioningServices	resource group	3-64	Alphanumerics and hyphens End with alphanumeric.
provisioningServices / certificates	provisioningServices	1-64	Alphanumerics, hyphens, periods, and underscores

Microsoft.DevTestLab

Entity	Scope	Length	Valid Characters
labs	resource group	1-50	Alphanumerics, underscores, and hyphens
labs / customimages	lab	1-80	Alphanumerics, underscores, hyphens, and parentheses
labs / formulas	lab	1-80	Alphanumerics, underscores, hyphens, and parentheses
labs / virtualmachines	lab	1-15 (Windows) 1-64 (Linux)	Alphanumerics and hyphens Start and end with alphanumeric; can't be all numbers.

Microsoft.DocumentDB

Entity	Scope	Length	Valid Characters
databaseAccounts	global	3-44	Lowercase letters, numbers, and hyphens Start with lowercase letter or number.

Microsoft.ElasticSan (preview)

Entity	Scope	Length	Valid Characters
elasticSans	global	3-24	Lowercase letters, numbers, hyphens, and underscores Start with lowercase letter or number. Must begin and end with a letter or number. Each hyphen and underscore must be preceded and followed by an alphanumeric character.
elasticSans / volumeGroups	elastic san	3-63	Lowercase letters, numbers, and hyphens Start with lowercase letter or number. Must begin and end with a letter or number. Each hyphen must be preceded and followed by an alphanumeric character.

Microsoft.EventGrid

Entity	Scope	Length	Valid Characters
domains	resource group	3-50	Alphanumerics and hyphens
domains / topics	domain	3-50	Alphanumerics and hyphens
eventSubscriptions	resource group	3-64	Alphanumerics and hyphens
topics	region	3-50	Alphanumerics and hyphens

Microsoft.EventHub

Entity	Scope	Length	Valid Characters
clusters	resource group	6-50	Alphanumerics and hyphens Start with a letter. End with letter or number.
namespaces	global	6-50	Alphanumerics and hyphens Start with a letter. End with letter or number.
namespaces / AuthorizationRules	namespace	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with letter or number.
namespaces / disasterRecoveryConfigs	global	6-50	Alphanumerics and hyphens Start with a letter. End with alphanumeric.
namespaces / eventhubs	namespace	1-256	Alphanumerics, periods, hyphens, and underscores Start and end with letter or number.
namespaces / eventhubs / authorizationRules	event hub	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with letter or number.
namespaces / eventhubs / consumergroups	event hub	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with letter or number.

Microsoft.HDInsight

Entity	Scope	Length	Valid Characters
clusters	global	3-59	Alphanumerics and hyphens Start and end with letter or number.

Microsoft.ImportExport

Entity	Scope	Length	Valid Characters
jobs	resource group	2-64	Alphanumerics and hyphens Start with a letter.

Microsoft.Insights

Entity	Scope	Length	Valid Characters
actionGroups	resource group	1-260	Can't use: :<>+/&%\?| or control characters Can't end with space or period.
autoScaleSettings	resource group	1-260	Can't use: :<>+/&%\?| or control characters Can't end with space or period.
components	resource group	1-260	Can't use: %&\?/ or control characters Can't end with space or period.
scheduledQueryRules	resource group	1-260	Can't use: *<>%{}&:\\?/#| or control characters Can't end with space or period.
metricAlerts	resource group	1-260	Can't use: *#&+:<>?@%{}\/| or control characters Can't end with space or period.
activityLogAlerts	resource group	1-260	Can't use: <>*%{}&:\\?+/#| or control characters Can't end with space or period.

Microsoft.AlertsManagement

Entity	Scope	Length	Valid Characters
prometheusRuleGroups	resource group	1-260	Can't use: <>*%{}&:\\?+/#| or control characters Can't end with space or period.

Microsoft.IoTCentral

Entity	Scope	Length	Valid Characters
IoTApps	global	2-63	Lowercase letters, numbers, and hyphens Start with lowercase letter or number.

Microsoft.KeyVault

Entity	Scope	Length	Valid Characters
vaults	global	3-24	Alphanumerics and hyphens Start with a letter. End with letter or number. Can't contain consecutive hyphens.
vaults / secrets	Vault	1-127	Alphanumerics and hyphens

Microsoft.Kusto

Entity	Scope	Length	Valid Characters
clusters	global	4-22	Lowercase letters and numbers Start with a letter.
/clusters / databases	cluster	1-260	Alphanumerics, hyphens, spaces, and periods
/clusters / databases / dataConnections	database	1-40	Alphanumerics, hyphens, spaces, and periods
/clusters / databases / eventhubconnections	database	1-40	Alphanumerics, hyphens, spaces, and periods

Microsoft.LabServices

Entity	Scope	Length	Valid Characters
labplans	resource group	1-100	Alphanumerics, hyphens, periods, and underscores Start with a letter and end with alphanumeric.
labs	resource group	1-100	Alphanumerics, hyphens, periods, and underscores Start with a letter and end with alphanumeric.

Microsoft.LoadTestService

Entity	Scope	Length	Valid Characters
loadtests	global	1-64	Can't use: <>*&@:?+/\,;=.|[]" or space Can't start with underscore, hyphen, or number. Can't end with underscore or hyphen.

Microsoft.Logic

Entity	Scope	Length	Valid Characters
integrationAccounts	resource group	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / assemblies	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / batchConfigurations	integration account	1-20	Alphanumerics
integrationAccounts / certificates	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / maps	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / partners	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / rosettanetprocessconfigurations	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / schemas	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationAccounts / sessions	integration account	1-80	Alphanumerics, hyphens, underscores, periods, and parentheses
integrationServiceEnvironments	resource group	1-80	Alphanumerics, hyphens, periods, and underscores
integrationServiceEnvironments / managedApis	integration service environment	1-80	Alphanumerics, hyphens, periods, and underscores
workflows	resource group	1-43	Alphanumerics, hyphens, underscores, periods, and parentheses

Microsoft.MachineLearning

Entity	Scope	Length	Valid Characters
commitmentPlans	resource group	1-260	Can't use: <>*%&:?+/\\ or control characters Can't end with a space.
webServices	resource group	1-260	Can't use: <>*%&:?+/\\ or control characters Can't end with a space.
workspaces	resource group	1-260	Can't use: <>*%&:?+/\\ or control characters Can't end with a space.

Microsoft.MachineLearningServices

Entity	Scope	Length	Valid Characters
workspaces	resource group	3-33	Alphanumerics, hyphens, and underscores
workspaces / computes	workspace	3-24 for compute instance 3-32 for AML compute 2-16 for other compute types	Alphanumerics and hyphens
workspaces / datastores	workspace	Maximum 255 characters for datastore name	Datastore name consists only of lowercase letters, digits, and underscores.

Microsoft.ManagedIdentity

Entity	Scope	Length	Valid Characters
userAssignedIdentities	resource group	3-128	Alphanumerics, hyphens, and underscores Start with a letter or number.

Microsoft.Management

Entity	Scope	Length	Valid Characters
managementgroups	tenant	1-90	Alphanumerics, hyphens, underscores, periods, and parentheses Start with a letter or number. Can't end with period.

Microsoft.Maps

Entity	Scope	Length	Valid Characters
accounts	resource group	1-98 (for resource group name and account name)	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric.

Microsoft.Media

Entity	Scope	Length	Valid Characters
mediaservices	Azure region	3-24	Lowercase letters and numbers
mediaservices / liveEvents	Media service	1-32	Alphanumerics and hyphens Start with alphanumeric.
mediaservices / liveEvents / liveOutputs	Live event	1-256	Alphanumerics and hyphens Start with alphanumeric.
mediaservices / streamingEndpoints	Media service	1-24	Alphanumerics and hyphens Start with alphanumeric.

Microsoft.MobileNetwork

Entity	Scope	Length	Valid Characters
mobileNetworks	Resource Group	1-64	Alphanumerics and hyphens Start with alphanumeric.
mobileNetworks / sites	Mobile Network	1-64	Alphanumerics and hyphens Start with alphanumeric.
mobileNetworks / slices	Mobile Network	1-64	Alphanumerics and hyphens Start with alphanumeric.
mobileNetworks / services	Mobile Network	1-64	Alphanumerics and hyphens Start with alphanumeric. The following words can't be used on their own as the name: default, requested, service.
mobileNetworks / dataNetworks	Mobile Network	1-64	Alphanumeric, hyphens, and a period/dot (.) Start and end with alphanumeric. Note: A period/dot (.) must be followed by an alphanumeric character.
mobileNetworks / simPolicies	Mobile Network	1-64	Alphanumerics and hyphens Start with alphanumeric.
packetCoreControlPlanes	Resource Group	1-64	Alphanumeric, underscores and hyphens Start with alphanumeric.
packetCoreControlPlanes / packetCoreDataPlanes	Packet Core Control Plane	1-64	Alphanumeric, underscores, and hyphens Start with alphanumeric.
packetCoreControlPlanes / packetCoreDataPlanes / attachedDataNetworks	Mobile Network	1-64	Alphanumeric, hyphens and a period/dot (.) Start and end with alphanumeric. Note: A period/dot (.) must be followed by an alphanumeric character.
simGroups	Resource Group	1-64	Alphanumeric, underscores, and hyphens Start with alphanumeric.
simGroups / sims	Sim Group	1-64	Alphanumeric, underscores, and hyphens Start with alphanumeric.

Microsoft.NetApp

Entity	Scope	Length	Valid Characters
netAppAccounts	resource group	1-128	Alphanumerics, underscores, and hyphens Start with alphanumeric.
netAppAccounts / backups	NetApp account	3-225	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric.
netAppAccounts / backupPolicies	NetApp account	1-64	Alphanumerics, underscores, and hyphens Start with alphanumeric.
netAppAccounts / capacityPools	NetApp account	1-64	Alphanumerics, underscores, and hyphens Start with alphanumeric.
netAppAccounts / snapshots	NetApp account	1-255	Alphanumerics, underscores, and hyphens Start with alphanumeric.
netAppAccounts / snapshotPolicies	NetApp account	1-64	Alphanumerics, underscores, and hyphens Start with alphanumeric.
netAppAccounts / volumes	NetApp account	1-64	Alphanumerics, underscores, and hyphens Start with alphanumeric. Volume can't be named bin or default.
netAppAccounts / volumeGroups	NetApp account	3-64	Alphanumerics, underscores, and hyphens Start with alphanumeric.

Microsoft.Network

Entity	Scope	Length	Valid Characters
applicationGateways	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
applicationSecurityGroups	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
azureFirewalls	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
bastionHosts	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
connections	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
dnsForwardingRuleset	resource group	1-80	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
dnsResolvers	resource group	1-80	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
dnsResolvers / inboundEndpoints	resource group	1-80	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
dnsResolvers / outboundEndpoints	resource group	1-80	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
dnsZones	resource group	1-63 characters 2 to 34 labels Each label is a set of characters separated by a period. For example, contoso.com has two labels.	Each label can contain alphanumerics, underscores, and hyphens. Each label is separated by a period.
expressRouteCircuits	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
firewallPolicies	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
firewallPolicies / ruleGroups	firewall policy	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
frontDoors	global	5-64	Alphanumerics and hyphens Start and end with alphanumeric.
frontdoorWebApplicationFirewallPolicies	resource group	1-128	Alphanumerics Start with a letter.
loadBalancers	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
loadBalancers / inboundNatRules	load balancer	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
localNetworkGateways	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
networkInterfaces	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
networkSecurityGroups	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
networkSecurityGroups / securityRules	network security group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
networkWatchers	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
privateDnsZones	resource group	1-63 characters 2 to 34 labels Each label is a set of characters separated by a period. For example, contoso.com has two labels.	Each label can contain alphanumerics, underscores, and hyphens. Each label is separated by a period.
privateDnsZones / virtualNetworkLinks	private Domain Name System zone	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
privateEndpoints	resource group	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
privateLinkServices	resource group	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
privateLinkServices / privateEndpointConnections	private link service	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
publicIPAddresses	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
publicIPPrefixes	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
routeFilters	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
routeFilters / routeFilterRules	route filter	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
routeTables	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
routeTables / routes	route table	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
serviceEndpointPolicies	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
trafficmanagerprofiles	global	1-63	Alphanumerics and hyphens Start and end with alphanumeric. Note: A period/dot (.) is not allowed in the profile name.
virtualNetworkGateways	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
virtualNetworks	resource group	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
virtualnetworks / subnets	virtual network	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
virtualNetworks / virtualNetworkPeerings	virtual network	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
virtualWans	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
vpnGateways	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
vpnGateways / vpnConnections	VPN gateway	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.
vpnSites	resource group	1-80	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric. End with alphanumeric or underscore.

Microsoft.NetworkCloud

Entity	Scope	Length	Valid Characters
bareMetalMachineKeySets	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
bareMetalMachines	resource group	2-64	Alphanumerics
bmcKeySets	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
cloudServicesNetworks	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
clusterManagers	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
clusters	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
clusters / metricsConfigurations	cluster	see value	Must be default.
edgeClusters	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
edgeClusters / nodes	edge cluster	2-64	Alphanumerics
kubernetesClusters	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
kubernetesClusters / agentPools	kubernetes cluster	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
kubernetesClusters / features	kubernetes cluster	2-63	Alphanumerics, underscores, and hyphens Start and end with alphanumeric. Only predefined values are valid.
l2Networks	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
l3Networks	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
racks	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
registrationHubs	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
registrationHubs / machines	registration hub	2-40	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
storageAppliances	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
trunkedNetworks	resource group	2-30	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
volumes	resource group	2-64	Alphanumerics, underscores, and hyphens Start and end with alphanumeric.
virtualMachines	resource group	2-64	Alphanumerics
virtualMachines / consoles	virtual machine	see value	Must be default.

Microsoft.NotificationHubs

Entity	Scope	Length	Valid Characters
namespaces	global	6-50	Alphanumerics and hyphens Start with a letter. End with alphanumeric.
namespaces / AuthorizationRules	namespace	1-256	Alphanumerics, periods, hyphens, and underscores Start alphanumeric.
namespaces / notificationHubs	namespace	1-260	Alphanumerics, periods, hyphens, and underscores Start alphanumeric.
namespaces / notificationHubs / AuthorizationRules	notification hub	1-256	Alphanumerics, periods, hyphens, and underscores Start alphanumeric.

Microsoft.OperationalInsights

Entity	Scope	Length	Valid Characters
clusters	resource group	4-63	Alphanumerics and hyphens Start and end with alphanumeric.
workspaces	resource group	4-63	Alphanumerics and hyphens Start and end with alphanumeric.

Microsoft.OperationsManagement

Entity	Scope	Length	Valid Characters
solutions	workspace	N/A	For solutions authored by Microsoft, the name must be in the pattern: SolutionType(WorkspaceName) For solutions authored by third parties, the name must be in the pattern: SolutionType[WorkspaceName] For example, a valid name is: AntiMalware(contoso-IT) The solution type is case-sensitive.

Microsoft.Portal

Entity	Scope	Length	Valid Characters
dashboards	resource group	3-160	Alphanumerics and hyphens To use restricted characters, add a tag named hidden-title with the dashboard name you want to use. The portal displays that name when showing the dashboard.

Microsoft.PowerBI

Entity	Scope	Length	Valid Characters
workspaceCollections	region	3-63	Alphanumerics and hyphens Can't start with hyphen. Can't use consecutive hyphens.

Microsoft.PowerBIDedicated

Entity	Scope	Length	Valid Characters
capacities	region	3-63	Lowercase letters or numbers Start with lowercase letter.

Microsoft.Quantum

Entity	Scope	Length	Valid Characters
workspaces	region	2-54	Alphanumerics and hyphens Can't start or end with hyphen.

Microsoft.RecoveryServices

Entity	Scope	Length	Valid Characters
vaults	resource group	2-50	Alphanumerics and hyphens Start with a letter.
vaults / backupPolicies	vault	3-150	Alphanumerics and hyphens Start with a letter. Can't end with hyphen.

Microsoft.Relay

Entity	Scope	Length	Valid Characters
namespaces	global	6-50	Alphanumerics and hyphens Start with a letter. End with a letter or number.
namespaces / AuthorizationRules	namespace	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphanumeric.
namespaces / HybridConnections	namespace	1-260	Alphanumerics, periods, hyphens, underscores, and slashes Start and end with alphanumeric.
namespaces / HybridConnections/authorizationRules	hybrid connection	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphanumeric.
namespaces / WcfRelays	namespace	1-260	Alphanumerics, periods, hyphens, underscores, and slashes Start and end with alphanumeric.
namespaces / WcfRelays / authorizationRules	Wcf relay	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphanumeric.

Microsoft.Resources

Entity	Scope	Length	Valid Characters
deployments	resource group	1-64	Alphanumerics, underscores, parentheses, hyphens, and periods
resourcegroups	subscription	1-90	Underscores, hyphens, periods, parentheses, and letters or digits as defined by the Char.IsLetterOrDigit function Valid characters are members of the following categories in UnicodeCategory: UppercaseLetter, LowercaseLetter, TitlecaseLetter, ModifierLetter, OtherLetter, DecimalDigitNumber. Can't end with period.
tagNames	resource	1-512	Can't use: <>%&\?/ or control characters
tagNames / tagValues	tag name	1-256	All characters
templateSpecs	resource group	1-90	Alphanumerics, underscores, parentheses, hyphens, and periods

Microsoft.Security

Entity	Scope	Length	Valid Characters
advancedThreatProtectionSettings	resource group	see value	Must be current
alertsSuppressionRules	subscription	1-260	Alphanumerics, underscores, and hyphens
assessmentMetadata	assessment type	1-260	Alphanumerics, underscores, and hyphens
assessments	assessment type	1-260	Alphanumerics, underscores, and hyphens
automations	resource group	1-260	Alphanumerics, underscores, and hyphens
autoProvisioningSettings	subscription	1-260	Alphanumerics, underscores, and hyphens
connectors	subscription	1-260	Alphanumerics, underscores, and hyphens
deviceSecurityGroups	resource group	1-260	Alphanumerics, underscores, and hyphens
informationProtectionPolicies	resource group	see values	Use one of: custom effective
iotSecuritySolutions	resource group	1-260	Alphanumerics, underscores, and hyphens
locations / applicationWhitelistings	subscription	1-260	Alphanumerics, underscores, and hyphens
locations / jitNetworkAccessPolicies	resource group	1-260	Alphanumerics, underscores, and hyphens
ingestionSettings	subscription	1-260	Alphanumerics, underscores, and hyphens
pricings	subscription	1-260	Alphanumerics, underscores, and hyphens
securityContacts	subscription	1-260	Alphanumerics, underscores, and hyphens
settings	subscription	see values	Use one of: MCAS Sentinel WDATP WDATP_EXCLUDE_LINUX_PUBLIC_PREVIEW
serverVulnerabilityAssessments	resource type	see value	Must be Default
sqlVulnerabilityAssessments / baselineRules	Vulnerability assessment	1-260	Alphanumerics, underscores, and hyphens

Microsoft.ServiceBus

Entity	Scope	Length	Valid Characters
namespaces	global	6-50	Alphanumerics and hyphens Start with a letter. End with a letter or number. For more information, see Create namespace.
namespaces / AuthorizationRules	namespace	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphnumeric.
namespaces / disasterRecoveryConfigs	global	6-50	Alphanumerics and hyphens Start with a letter. End with alphanumeric.
namespaces / migrationConfigurations	namespace		Should always be $default.
namespaces / queues	namespace	1-260	Alphanumerics, periods, hyphens, underscores, and slashes Start and end with alphanumeric.
namespaces / queues / authorizationRules	queue	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphnumeric.
namespaces / topics	namespace	1-260	Alphanumerics, periods, hyphens, underscores, and slashes Start and end with alphanumeric.
namespaces / topics / authorizationRules	topic	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphnumeric.
namespaces / topics / subscriptions	topic	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphnumeric.
namespaces / topics / subscriptions / rules	subscription	1-50	Alphanumerics, periods, hyphens, and underscores Start and end with alphnumeric.

Microsoft.ServiceFabric

Entity	Scope	Length	Valid Characters
clusters	region	4-23	Lowercase letters, numbers, and hyphens Start with lowercase letter. End with lowercase letter or number.

Microsoft.SignalRService

Entity	Scope	Length	Valid Characters
signalR	global	3-63	Alphanumerics and hyphens Start with a letter. End with letter or number.

Microsoft.Sql

Entity	Scope	Length	Valid Characters
managedInstances	global	1-63	Lowercase letters, numbers, and hyphens Can't start or end with hyphen.
servers	global	1-63	Lowercase letters, numbers, and hyphens Can't start or end with hyphen.
servers / administrators	server		Must be ActiveDirectory.
servers / databases	server	1-128	Can't use: <>*%&:\/? or control characters Can't end with period or space.
servers / databases / syncGroups	database	1-150	Alphanumerics, hyphens, and underscores
servers / elasticPools	server	1-128	Can't use: <>*%&:\/? or control characters Can't end with period or space.
servers / failoverGroups	global	1-63	Lowercase letters, numbers, and hyphens Can't start or end with hyphen.
servers / firewallRules	server	1-128	Can't use: <>*%&:;\/? or control characters Can't end with period.
servers / keys	server		Must be in format: VaultName_KeyName_KeyVersion.

Microsoft.Storage

Entity	Scope	Length	Valid Characters
storageAccounts	global	3-24	Lowercase letters and numbers
storageAccounts / blobServices	storage account		Must be default.
storageAccounts / blobServices / containers	storage account	3-63	Lowercase letters, numbers, and hyphens Start with lowercase letter or number. Can't use consecutive hyphens.
storageAccounts / fileServices	storage account		Must be default.
storageAccounts / fileServices / shares	storage account	3-63	Lowercase letters, numbers, and hyphens Can't start or end with hyphen. Can't use consecutive hyphens.
storageAccounts / managementPolicies	storage account		Must be default.
blob	container	1-1024	Any URL characters and case sensitive
queue	storage account	3-63	Lowercase letters, numbers, and hyphens Can't start or end with hyphens. Can't use consecutive hyphens.
table	storage account	3-63	Alphanumerics Start with a letter.

Microsoft.StorageSync

Entity	Scope	Length	Valid Characters
storageSyncServices	resource group	1-260	Alphanumerics, spaces, periods, hyphens, and underscores Can't end with period or space.
storageSyncServices / syncGroups	storage sync service	1-260	Alphanumerics, spaces, periods, hyphens, and underscores Can't end with period or space.

Microsoft.StorSimple

Entity	Scope	Length	Valid Characters
managers	resource group	2-50	Alphanumerics and hyphens Start with a letter. End with alphanumeric.

Microsoft.StreamAnalytics

Entity	Scope	Length	Valid Characters
streamingjobs	resource group	3-63	Alphanumerics, hyphens, and underscores
streamingjobs / functions	streaming job	3-63	Alphanumerics, hyphens, and underscores
streamingjobs / inputs	streaming job	3-63	Alphanumerics, hyphens, and underscores
streamingjobs / outputs	streaming job	3-63	Alphanumerics, hyphens, and underscores
streamingjobs / transformations	streaming job	3-63	Alphanumerics, hyphens, and underscores

Microsoft.Synapse

Entity	Scope	Length	Valid Characters
privateLinkHubs	resource group	1-45	Lowercase letters and numbers
workspaces	global	1-50	Lowercase letters, hyphens, and numbers Start and end with letter or number. Can't contain -ondemand.
workspaces / bigDataPools	workspace	1-15	Letters and numbers Start with a letter. End with letter or number. Can't contain reserved words.
workspaces / sqlPools	workspace	1-60	Can't contain <>*%&:\/?@- or control characters Can't end with . or space. Can't contain reserved words.

Microsoft.TimeSeriesInsights

Entity	Scope	Length	Valid Characters
environments	resource group	1-90	Can't use: '<>%&:\?/# or control characters
environments / accessPolicies	environment	1-90	Can't use: '<>%&:\?/# or control characters
environments / eventSources	environment	1-90	Can't use: '<>%&:\?/# or control characters
environments / referenceDataSets	environment	3-63	Alphanumerics

Microsoft.Web

Entity	Scope	Length	Valid Characters
certificates	resource group	1-260	Can't use: / Can't end with a space or period.
serverfarms	resource group	1-60	Alphanumeric, hyphens, and Unicode characters that can be mapped to Punycode
sites	Global or per domain; see note below.	2-60	Alphanumeric, hyphens, and Unicode characters that can be mapped to Punycode Can't start or end with hyphen.
sites / slots	site	2-59	Alphanumeric, hyphens, and Unicode characters that can be mapped to Punycode
sites / privateEndpointConnections	site	2-64	Alphanumerics, underscores, periods, and hyphens Start with alphanumeric; end alphanumeric or underscore.

Märkus

A web site must have a globally unique URL. When you create a web site that uses a hosting plan, the URL is http://<app-name>.azurewebsites.net. The app name must be globally unique. When you create a web site that uses an App Service Environment, the app name must be unique within the domain for the App Service Environment. For both cases, the URL of the site is globally unique.

Azure Functions has the same naming rules and restrictions as Microsoft.Web/sites. When generating the host ID, the function app name is truncated to 32 characters. This can cause host ID collision when a shared storage account is used. For more information, see Host ID considerations.

Unicode characters are parsed to Punycode using the IdnMapping.GetAscii method

Next steps

• For recommendations about how to name resources, see Ready: Recommended naming and tagging conventions.

• Resources with public endpoints can't include reserved words or trademarks in their names. For a list of the blocked words, see Resolve reserved resource name errors.