Items - Create ML Experiment

Service:: MLExperiment

API Version:: v1

Creates a machine learning experiment in the specified workspace.
This API supports long running operations (LRO).

This API does not support create an machine learning experiment with definition.

Permissions

The caller must have a contributor workspace role.

Required Delegated Scopes

MLExperiment.ReadWrite.All or Item.ReadWrite.All

Limitations

To create a machine learning experiment the workspace must be on a supported Fabric capacity. For more information see: Microsoft Fabric license types.

Microsoft Entra supported identities

This API supports the Microsoft identities listed in this section.

Identity	Support
User	Yes
Service principal and Managed identities	No

Interface

POST https://api.fabric.microsoft.com/v1/workspaces/{workspaceId}/mlExperiments

URI Parameters

Name	In	Required	Type	Description
workspaceId	path	True	string (uuid)	The workspace ID.

Request Body

Name	Required	Type	Description
displayName	True	string	The machine learning experiment display name. The display name must follow naming rules according to item type.
description		string	The machine learning experiment description. Maximum length is 256 characters.
folderId		string (uuid)	The folder ID. If not specified or null, the machine learning experiment is created with the workspace as its folder.
sensitivityLabelSettings		SensitivityLabelSettings	The sensitivity label settings for the machine learning experiment.

Responses

Name	Type	Description
201 Created	MLExperiment	Successfully created
202 Accepted		Request accepted, machine learning experiment provisioning in progress. Headers Location: string x-ms-operation-id: string Retry-After: integer
429 Too Many Requests	ErrorResponse	The service rate limit was exceeded. The server returns a `Retry-After` header indicating, in seconds, how long the client must wait before sending additional requests. Headers Retry-After: integer
Other Status Codes	ErrorResponse	Common error codes: InvalidItemType - Item type is invalid. ItemDisplayNameAlreadyInUse - Item display name is already used. CorruptedPayload - The provided payload is corrupted. WorkspaceItemsLimitExceeded - Workspace item limit exceeded.

Examples

Create a machine learning experiment example

Sample request

HTTP

POST https://api.fabric.microsoft.com/v1/workspaces/cfafbeb1-8037-4d0c-896e-a46fb27ff229/mlExperiments

{
  "displayName": "MLExperiment_1",
  "description": "A machine learning experiment description"
}

Sample response

Status code:: 201

{
  "displayName": "MLExperiment_1",
  "description": "A machine learning experiment description",
  "type": "MLExperiment",
  "workspaceId": "cfafbeb1-8037-4d0c-896e-a46fb27ff229",
  "id": "5b218778-e7a5-4d73-8187-f10824047715",
  "sensitivityLabel": {
    "id": "b7b4f4d9-3f0d-4b3e-8f3d-4f6d3f4f3f4f"
  }
}

Status code:: 202

Location: https://api.fabric.microsoft.com/v1/operations/0acd697c-1550-43cd-b998-91bfbfbd47c6
x-ms-operation-id: 0acd697c-1550-43cd-b998-91bfbfbd47c6
Retry-After: 30

Definitions

Name	Description
CreateMLExperimentRequest	Create machine learning experiment request payload.
EntireTenantPrincipal	Represents a tenant principal
ErrorRelatedResource	The error related resource details object.
ErrorResponse	The error response.
ErrorResponseDetails	The error response details.
GroupDetails	Group specific details. Applicable when the principal type is `Group`.
GroupPrincipal	Represents a security group.
GroupType	The type of the group. Additional group types may be added over time.
ItemTag	Represents a tag applied on an item.
ItemType	The type of the item. Additional item types may be added over time.
MLExperiment	A machine learning experiment object.
MLExperimentProperties	The machine learning experiment properties.
PrincipalType	The type of the principal. Additional principal types may be added over time.
SensitivityLabel	Represents a sensitivity label applied to an item.
SensitivityLabelApplyStrategy	The strategy for applying the sensitivity label. The default value is ApplyOrFail. Additional types may be added over time.
SensitivityLabelSettings	The sensitivity label settings.
ServicePrincipalDetails	Service principal specific details. Applicable when the principal type is `ServicePrincipal`.
ServicePrincipalPrincipal	Represents a Microsoft Entra service principal.
ServicePrincipalProfileDetails	Service principal profile details. Applicable when the principal type is `ServicePrincipalProfile`.
ServicePrincipalProfilePrincipal	Represents a service principal profile.
UserDetails	User principal specific details. Applicable when the principal type is `User`.
UserPrincipal	Represents a Microsoft Entra user principal.

CreateMLExperimentRequest

Object

Create machine learning experiment request payload.

Name	Type	Description
description	string	The machine learning experiment description. Maximum length is 256 characters.
displayName	string	The machine learning experiment display name. The display name must follow naming rules according to item type.
folderId	string (uuid)	The folder ID. If not specified or null, the machine learning experiment is created with the workspace as its folder.
sensitivityLabelSettings	SensitivityLabelSettings	The sensitivity label settings for the machine learning experiment.

EntireTenantPrincipal

Object

Represents a tenant principal

Name	Type	Description
displayName	string	The principal's display name.
id	string (uuid)	The principal's ID.
type	string: EntireTenant	The type of the principal. Additional principal types may be added over time.

ErrorRelatedResource

Object

The error related resource details object.

Name	Type	Description
resourceId	string	The resource ID that's involved in the error.
resourceType	string	The type of the resource that's involved in the error.

ErrorResponse

Object

The error response.

Name	Type	Description
errorCode	string	A specific identifier that provides information about an error condition, allowing for standardized communication between our service and its users.
message	string	A human readable representation of the error.
moreDetails	ErrorResponseDetails[]	List of additional error details.
relatedResource	ErrorRelatedResource	The error related resource details.
requestId	string (uuid)	ID of the request associated with the error.

ErrorResponseDetails

Object

The error response details.

Name	Type	Description
errorCode	string	A specific identifier that provides information about an error condition, allowing for standardized communication between our service and its users.
message	string	A human readable representation of the error.
relatedResource	ErrorRelatedResource	The error related resource details.

GroupDetails

Object

Group specific details. Applicable when the principal type is Group.

Name	Type	Description
groupType	GroupType	The type of the group. Additional group types may be added over time.

GroupPrincipal

Object

Represents a security group.

Name	Type	Description
displayName	string	The principal's display name.
groupDetails	GroupDetails	Group specific details. Applicable when the principal type is `Group`.
id	string (uuid)	The principal's ID.
type	string: Group	The type of the principal. Additional principal types may be added over time.

GroupType

Enumeration

The type of the group. Additional group types may be added over time.

Value	Description
Unknown	Principal group type is unknown.
SecurityGroup	Principal is a security group.
DistributionList	Principal is a distribution list.

ItemTag

Object

Represents a tag applied on an item.

Name	Type	Description
displayName	string	The name of the tag.
id	string (uuid)	The tag ID.

ItemType

Enumeration

The type of the item. Additional item types may be added over time.

Value	Description
Dashboard	PowerBI dashboard.
Report	PowerBI report.
SemanticModel	PowerBI semantic model.
PaginatedReport	PowerBI paginated report.
Datamart	PowerBI datamart.
Lakehouse	A lakehouse.
Eventhouse	An eventhouse.
Environment	An environment.
KQLDatabase	A KQL database.
KQLQueryset	A KQL queryset.
KQLDashboard	A KQL dashboard.
DataPipeline	A data pipeline.
Notebook	A notebook.
SparkJobDefinition	A spark job definition.
MLExperiment	A machine learning experiment.
MLModel	A machine learning model.
Warehouse	A warehouse.
Eventstream	An eventstream.
SQLEndpoint	An SQL endpoint.
MirroredWarehouse	A mirrored warehouse.
MirroredDatabase	A mirrored database.
Reflex	A Reflex.
GraphQLApi	An API for GraphQL item.
MountedDataFactory	A MountedDataFactory.
SQLDatabase	A SQLDatabase.
CopyJob	A Copy job.
VariableLibrary	A VariableLibrary.
Dataflow	A Dataflow.
ApacheAirflowJob	An ApacheAirflowJob.
WarehouseSnapshot	A Warehouse snapshot.
DigitalTwinBuilder	A DigitalTwinBuilder.
DigitalTwinBuilderFlow	A Digital Twin Builder Flow.
MirroredAzureDatabricksCatalog	A mirrored azure databricks catalog.
Map	A Map.
AnomalyDetector	An Anomaly Detector.
UserDataFunction	A User Data Function.
GraphModel	A GraphModel.
GraphQuerySet	A Graph QuerySet.
SnowflakeDatabase	A Snowflake Database to store Iceberg tables created from Snowflake account.
OperationsAgent	A OperationsAgent.
CosmosDBDatabase	A Cosmos DB Database.
Ontology	An Ontology.
EventSchemaSet	An EventSchemaSet.
DataAgent	A DataAgent.

MLExperiment

Object

A machine learning experiment object.

Name	Type	Description
defaultIdentity	Principal: EntireTenantPrincipal GroupPrincipal ServicePrincipalPrincipal ServicePrincipalProfilePrincipal UserPrincipal	The item's default identity.
description	string	The item description.
displayName	string	The item display name.
folderId	string (uuid)	The folder ID.
id	string (uuid)	The item ID.
properties	MLExperimentProperties	The machine learning experiment properties.
sensitivityLabel	SensitivityLabel	The item sensitivity label.
tags	ItemTag[]	List of applied tags.
type	ItemType	The item type.
workspaceId	string (uuid)	The workspace ID.

MLExperimentProperties

Object

The machine learning experiment properties.

Name	Type	Description
mlFlowExperimentId	string (uuid)	The internal machine learning flow experiment ID.

PrincipalType

Enumeration

The type of the principal. Additional principal types may be added over time.

Value	Description
User	Principal is a Microsoft Entra user principal.
ServicePrincipal	Principal is a Microsoft Entra service principal.
Group	Principal is a security group.
ServicePrincipalProfile	Principal is a service principal profile.
EntireTenant	Principal represents all tenant users.

SensitivityLabel

Object

Represents a sensitivity label applied to an item.

Name	Type	Description
id	string (uuid)	The sensitivity label ID.

SensitivityLabelApplyStrategy

Enumeration

The strategy for applying the sensitivity label. The default value is ApplyOrFail. Additional types may be added over time.

Value	Description
ApplyOrFail	Apply the sensitivity label or fail the operation if it cannot be applied.
Ignore	Ignore the sensitivity label if it cannot be applied and proceed with the operation without applying the label.

SensitivityLabelSettings

Object

The sensitivity label settings.

Name	Type	Description
labelId	string (uuid)	The sensitivity label ID.
sensitivityLabelApplyStrategy	SensitivityLabelApplyStrategy	The strategy for applying the sensitivity label.

ServicePrincipalDetails

Object

Service principal specific details. Applicable when the principal type is ServicePrincipal.

Name	Type	Description
aadAppId	string (uuid)	The service principal's Microsoft Entra AppId.

ServicePrincipalPrincipal

Object

Represents a Microsoft Entra service principal.

Name	Type	Description
displayName	string	The principal's display name.
id	string (uuid)	The principal's ID.
servicePrincipalDetails	ServicePrincipalDetails	Service principal specific details. Applicable when the principal type is `ServicePrincipal`.
type	string: ServicePrincipal	The type of the principal. Additional principal types may be added over time.

ServicePrincipalProfileDetails

Object

Service principal profile details. Applicable when the principal type is ServicePrincipalProfile.

Name	Type	Description
parentPrincipal	Principal: EntireTenantPrincipal GroupPrincipal ServicePrincipalPrincipal ServicePrincipalProfilePrincipal UserPrincipal	The service principal profile's parent principal.

ServicePrincipalProfilePrincipal

Object

Represents a service principal profile.

Name	Type	Description
displayName	string	The principal's display name.
id	string (uuid)	The principal's ID.
servicePrincipalProfileDetails	ServicePrincipalProfileDetails	Service principal profile details. Applicable when the principal type is `ServicePrincipalProfile`.
type	string: ServicePrincipalProfile	The type of the principal. Additional principal types may be added over time.

UserDetails

Object

User principal specific details. Applicable when the principal type is User.

Name	Type	Description
userPrincipalName	string	The user principal name.

UserPrincipal

Object

Represents a Microsoft Entra user principal.

Name	Type	Description
displayName	string	The principal's display name.
id	string (uuid)	The principal's ID.
type	string: User	The type of the principal. Additional principal types may be added over time.
userDetails	UserDetails	User principal specific details. Applicable when the principal type is `User`.

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Items - Create ML Experiment

Permissions

Required Delegated Scopes

Limitations

Microsoft Entra supported identities

Interface

URI Parameters

Request Body

Responses

Examples

Create a machine learning experiment example

Sample request

Sample response

Definitions

CreateMLExperimentRequest

EntireTenantPrincipal

ErrorRelatedResource

ErrorResponse

ErrorResponseDetails

GroupDetails

GroupPrincipal

GroupType

ItemTag

ItemType

MLExperiment

MLExperimentProperties

PrincipalType

SensitivityLabel

SensitivityLabelApplyStrategy

SensitivityLabelSettings

ServicePrincipalDetails

ServicePrincipalPrincipal

ServicePrincipalProfileDetails

ServicePrincipalProfilePrincipal

UserDetails

UserPrincipal