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Create and update column definitions using the Web API

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You can perform all the same operations on column definitions using the Web API that you can with the SDK for .NET. This article focuses on working with column definitions (metadata) using the Web API.

Create columns

You can create table columns (entity attributes) at the same time you create the table definition by including the JSON definition of the attributes in the Attributes array for the entity you post in addition to the string attribute that serves as the primary name attribute. If you want to add attributes to an entity that is already created, you can send a POST request including the JSON definition of them to the entity Attributes collection-valued navigation property.

The following examples show how to create different kinds of columns

Create a string column

The following example uses these properties to create a string column.

StringAttributeMetadata properties Values
SchemaName new_BankName
DisplayName Bank Name
Description Type the name of the bank.
RequiredLevel None
MaxLength 100
FormatName Text

The following example creates a string column using the properties and adds it to the sample_bankaccount table.

The URI for the attribute is returned in the response.

Request:

POST [Organization URI]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes HTTP/1.1
MSCRM.SolutionUniqueName: examplesolution
Accept: application/json  
Content-Type: application/json; charset=utf-8  
OData-MaxVersion: 4.0  
OData-Version: 4.0  
  
{  
 "AttributeType": "String",  
 "AttributeTypeName": {  
  "Value": "StringType"  
 },  
 "Description": {  
  "@odata.type": "Microsoft.Dynamics.CRM.Label",  
  "LocalizedLabels": [  
   {  
    "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
    "Label": "Type the name of the bank",  
    "LanguageCode": 1033  
   }  
  ]  
 },  
 "DisplayName": {  
  "@odata.type": "Microsoft.Dynamics.CRM.Label",  
  "LocalizedLabels": [  
   {  
    "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
    "Label": "Bank Name",  
    "LanguageCode": 1033  
   }  
  ]  
 },  
 "RequiredLevel": {  
  "Value": "None",  
  "CanBeChanged": true,  
  "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"  
 },  
 "SchemaName": "new_BankName",  
 "@odata.type": "Microsoft.Dynamics.CRM.StringAttributeMetadata",  
 "FormatName": {  
  "Value": "Text"  
 },  
 "MaxLength": 100  
}

Response:

HTTP/1.1 204 No Content  
OData-Version: 4.0  
OData-EntityId: [Organization URI]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(f01bef16-287c-e511-80d2-00155d2a68d2)

Create a money column

The following example uses these properties to create a money attribute.

MoneyAttributeMetadata properties Values
SchemaName new_Balance
DisplayName Balance
Description Enter the balance amount.
RequiredLevel None
PrecisionSource 2
Note: For information on the valid values for PrecisionSource, see MoneyType. The value 2 means that the level of decimal precision matches TransactionCurrency.CurrencyPrecision that is associated with the current record.

The following example creates a money attribute using the properties and adds it to the sample_bankaccount table. The URI for the attribute is returned in the response.

Request:

POST [Organization URI]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes HTTP/1.1
MSCRM.SolutionUniqueName: examplesolution
Accept: application/json  
Content-Type: application/json; charset=utf-8  
OData-MaxVersion: 4.0  
OData-Version: 4.0  
  
{  
 "AttributeType": "Money",  
 "AttributeTypeName": {  
  "Value": "MoneyType"  
 },  
 "Description": {  
  "@odata.type": "Microsoft.Dynamics.CRM.Label",  
  "LocalizedLabels": [  
   {  
    "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
    "Label": "Enter the balance amount",  
    "LanguageCode": 1033  
   }  
  ]  
 },  
 "DisplayName": {  
  "@odata.type": "Microsoft.Dynamics.CRM.Label",  
  "LocalizedLabels": [  
   {  
    "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
    "Label": "Balance",  
    "LanguageCode": 1033  
   }  
  ]  
 },  
 "RequiredLevel": {  
  "Value": "None",  
  "CanBeChanged": true,  
  "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"  
 },  
 "SchemaName": "new_Balance",  
 "@odata.type": "Microsoft.Dynamics.CRM.MoneyAttributeMetadata",  
 "PrecisionSource": 2  
}

Response:

HTTP/1.1 204 No Content  
OData-Version: 4.0  
OData-EntityId: [Organization URI]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(f11bef16-287c-e511-80d2-00155d2a68d2)

Create a datetime column

The following example uses these properties to create a datetime attribute.

DateTimeAttributeMetadata properties Values
SchemaName new_Checkeddate
DisplayName Date
Description The date the account balance was last confirmed.
RequiredLevel None
Format DateOnly Note: For the valid options for this property, see DateTimeFormat EnumType

The following example creates a datetime attribute using the properties and adds it to the sample_bankaccount table. The URI for the attribute is returned in the response.

Request:

POST [Organization URI]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes HTTP/1.1
MSCRM.SolutionUniqueName: examplesolution
Accept: application/json  
Content-Type: application/json; charset=utf-8  
OData-MaxVersion: 4.0  
OData-Version: 4.0  
  
{  
 "AttributeType": "DateTime",  
 "AttributeTypeName": {  
  "Value": "DateTimeType"  
 },  
 "Description": {  
  "@odata.type": "Microsoft.Dynamics.CRM.Label",  
  "LocalizedLabels": [  
   {  
    "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
    "Label": "The date the account balance was last confirmed",  
    "LanguageCode": 1033  
   }  
  ]  
 },  
 "DisplayName": {  
  "@odata.type": "Microsoft.Dynamics.CRM.Label",  
  "LocalizedLabels": [  
   {  
    "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
    "Label": "Date",  
    "LanguageCode": 1033  
   }  
  ]  
 },  
 "RequiredLevel": {  
  "Value": "None",  
  "CanBeChanged": true,  
  "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"  
 },  
 "SchemaName": "new_Checkeddate",  
 "@odata.type": "Microsoft.Dynamics.CRM.DateTimeAttributeMetadata",  
 "Format": "DateOnly"  
}

Response:

HTTP/1.1 204 No Content  
OData-Version: 4.0  
OData-EntityId: [Organization URI]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(fe1bef16-287c-e511-80d2-00155d2a68d2)

Create a boolean column

The following example uses these properties to create a boolean column.

BooleanAttributeMetadata properties Values
SchemaName new_Boolean
DisplayName Sample Boolean
Description Boolean Attribute
RequiredLevel None
OptionSet.TrueOption True
OptionSet.FalseOption False

The following example creates a boolean attribute using the properties and adds it to the entity with the LogicalName value of new_bankaccount. The URI for the attribute is returned in the response.

Request:

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='new_bankaccount')/Attributes HTTP/1.1
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json

{
  "@odata.type": "Microsoft.Dynamics.CRM.BooleanAttributeMetadata",
  "AttributeType": "Boolean",
  "AttributeTypeName": {
    "Value": "BooleanType"
  },
  "DefaultValue": false,
  "OptionSet": {
    "TrueOption": {
      "Value": 1,
      "Label": {
        "@odata.type": "Microsoft.Dynamics.CRM.Label",
        "LocalizedLabels": [
          {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "True",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        ]
      }
    },
    "FalseOption": {
      "Value": 0,
      "Label": {
        "@odata.type": "Microsoft.Dynamics.CRM.Label",
        "LocalizedLabels": [
          {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "False",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        ]
      }
    },
    "OptionSetType": "Boolean"
  },
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Boolean Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ]
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample Boolean",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ]
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "new_Boolean"
}

Response:

HTTP/1.1 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='new_bankaccount')/Attributes(38d20735-6817-ed11-b83e-00224837179f)

Create a customer lookup column

Unlike other attributes, a customer lookup attribute is created using the CreateCustomerRelationships Action.

The parameters for this action require the definition of the lookup attribute and a pair of one-to-many relationships. A customer lookup attribute has two one-to-many relationships: one to the account entity and the other one to contact entity.

The following example uses these properties to create a customer lookup attribute.

Customer lookup attribute properties Values
SchemaName new_CustomerId
DisplayName Customer
Description Sample Customer Lookup Attribute

The example creates a customer lookup attribute, new_CustomerId, and adds it to the custom entity: new_bankaccount. The response is a CreateCustomerRelationshipsResponse ComplexType".

Request:

POST [Organization URI]/api/data/v9.2/CreateCustomerRelationships HTTP/1.1
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0  
OData-Version: 4.0  
Accept: application/json  
Content-Type: application/json; charset=utf-8  
  
{  
    "OneToManyRelationships": [{  
        "SchemaName": "new_bankaccount_customer_account",  
        "ReferencedEntity": "account",  
        "ReferencingEntity": "new_bankaccount"  
    }, {  
        "SchemaName": "new_bankaccount_customer_contact",  
        "ReferencedEntity": "contact",  
        "ReferencingEntity": "new_bankaccount"  
    }],  
    "Lookup": {  
        "AttributeType": "Lookup",  
        "AttributeTypeName": {  
            "Value": "LookupType"  
        },  
        "Description": {  
            "@odata.type": "Microsoft.Dynamics.CRM.Label",  
            "LocalizedLabels": [{  
                "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
                "Label": "Sample Customer Lookup Attribute",  
                "LanguageCode": 1033  
            }],  
            "UserLocalizedLabel": {  
                "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
                "Label": "Sample Customer Lookup Attribute",  
                "LanguageCode": 1033  
            }  
        },  
        "DisplayName": {  
            "@odata.type": "Microsoft.Dynamics.CRM.Label",  
            "LocalizedLabels": [{  
                "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
                "Label": "Customer",  
                "LanguageCode": 1033  
            }],  
            "UserLocalizedLabel": {  
                "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",  
                "Label": "Customer",  
                "LanguageCode": 1033  
            }  
        },  
        "SchemaName": "new_CustomerId",  
        "@odata.type": "Microsoft.Dynamics.CRM.ComplexLookupAttributeMetadata"  
    }  
}

Response:

HTTP/1.1 200 OK  
Content-Type: application/json; odata.metadata=minimal  
OData-Version: 4.0  
  
{  
    "@odata.context": "[Organization URI]/api/data/v9.2/$metadata#Microsoft.Dynamics.CRM.CreateCustomerRelationshipsResponse",  
    "RelationshipIds": [  
        "a7d261bc-3580-e611-80d7-00155d2a68de", "aed261bc-3580-e611-80d7-00155d2a68de"  
    ],  
    "AttributeId": "39a5d94c-e8a2-4a41-acc0-8487242d455e"  
}

Create a decimal column

The following example uses these properties to create a decimal column.

DecimalAttributeMetadata properties Values
SchemaName sample_Decimal
DisplayName Sample Decimal
Description Decimal Attribute
RequiredLevel None
MaxValue 100.0
MinValue 0.0
Precision 1

The following example creates a decimal attribute using the properties and adds it to the sample_bankaccount table.

The URI for the attribute is returned in the response.

Request:

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json
Content-Type: application/json; charset=utf-8
Content-Length: 1370

{
  "@odata.type": "Microsoft.Dynamics.CRM.DecimalAttributeMetadata",
  "AttributeType": "Decimal",
  "AttributeTypeName": {
    "Value": "DecimalType"
  },
  "MaxValue": 100.0,
  "MinValue": 0.0,
  "Precision": 1,
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Decimal Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Decimal Attribute",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample Decimal",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Sample Decimal",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "sample_Decimal"
}

Response:

HTTP/1.1 204 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(dba9c0df-4c05-ee11-8f6e-000d3a993550)

Create an integer column

The following example uses these properties to create an integer column.

IntegerAttributeMetadata properties Values
SchemaName sample_Integer
DisplayName Sample Integer
Description Integer Attribute
RequiredLevel None
MaxValue 100
MinValue 0
Format None

The following example creates an integer column using the properties and adds it to the sample_bankaccount table.

The URI for the column is returned in the response.

Request:

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json
Content-Type: application/json; charset=utf-8
Content-Length: 1392

{
  "@odata.type": "Microsoft.Dynamics.CRM.IntegerAttributeMetadata",
  "AttributeType": "Integer",
  "AttributeTypeName": {
    "Value": "IntegerType"
  },
  "MaxValue": 100,
  "MinValue": 0,
  "Format": "None",
  "SourceTypeMask": 0,
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Integer Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Integer Attribute",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample Integer",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Sample Integer",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "sample_Integer"
}

Response:

HTTP/1.1 204 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(17aac0df-4c05-ee11-8f6e-000d3a993550)

Create a memo column

The following example uses these properties to create a memo column.

MemoAttributeMetadata properties Values
SchemaName sample_Memo
DisplayName Sample Memo
Description Memo Attribute
RequiredLevel None
MaxLength 500
Format TextArea

The following example creates a memo column using the properties and adds it to the sample_bankaccount table.

The URI for the attribute is returned in the response.

Request:

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json
Content-Type: application/json; charset=utf-8
Content-Length: 1384

{
  "@odata.type": "Microsoft.Dynamics.CRM.MemoAttributeMetadata",
  "AttributeType": "Memo",
  "AttributeTypeName": {
    "Value": "MemoType"
  },
  "Format": "TextArea",
  "ImeMode": "Disabled",
  "MaxLength": 500,
  "IsLocalizable": false,
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Memo Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Memo Attribute",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample Memo",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Sample Memo",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "sample_Memo"
}

Response:

HTTP/1.1 204 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(b12d3cee-4c05-ee11-8f6e-000d3a993550)

Create a choice column

The following example uses these properties to create a local choice column.

PicklistAttributeMetadata properties Values
SchemaName sample_Choice
DisplayName Sample Choice
Description Choice Attribute
RequiredLevel None
OptionSet value:727000000, label:Bravo
value:727000001, label:Delta
value:727000002, label:Alpha
value:727000003, label:Charlie
value:727000004, label:Foxtrot

The following example creates a local column using the properties and adds it to the sample_bankaccount table.

The URI for the attribute is returned in the response.

Note

For an example showing how to create a choice column with a global option set, see Create a choice column using a global option set

Request:

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json
Content-Type: application/json; charset=utf-8
Content-Length: 4524

{
  "@odata.type": "Microsoft.Dynamics.CRM.PicklistAttributeMetadata",
  "AttributeType": "Picklist",
  "AttributeTypeName": {
    "Value": "PicklistType"
  },
  "SourceTypeMask": 0,
  "OptionSet": {
    "@odata.type": "Microsoft.Dynamics.CRM.OptionSetMetadata",
    "Options": [
      {
        "Value": 727000000,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Bravo",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Bravo",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      },
      {
        "Value": 727000001,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Delta",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Delta",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      },
      {
        "Value": 727000002,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Alpha",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Alpha",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      },
      {
        "Value": 727000003,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Charlie",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Charlie",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      },
      {
        "Value": 727000004,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Foxtrot",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Foxtrot",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      }
    ],
    "IsGlobal": false,
    "OptionSetType": "Picklist"
  },
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Choice Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Choice Attribute",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample Choice",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Sample Choice",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "sample_Choice"
}

Response:

HTTP/1.1 204 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(eed205fb-4c05-ee11-8f6e-000d3a993550)

Create a multi-select choice column

The following example uses these properties to create a local multi-select choice column.

MultiSelectPicklistAttributeMetadata properties Values
SchemaName sample_Choice
DisplayName Sample Choice
Description Choice Attribute
RequiredLevel None
OptionSet value:727000000, label:Appetizer
value:727000001, label:Entree
value:727000002, label:Dessert

The following example creates a local multi-select choice column using the properties and adds it to the sample_bankaccount table.

The URI for the attribute is returned in the response.

Request:

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json
Content-Type: application/json; charset=utf-8
Content-Length: 3404

{
  "@odata.type": "Microsoft.Dynamics.CRM.MultiSelectPicklistAttributeMetadata",
  "AttributeType": "Virtual",
  "AttributeTypeName": {
    "Value": "MultiSelectPicklistType"
  },
  "SourceTypeMask": 0,
  "OptionSet": {
    "@odata.type": "Microsoft.Dynamics.CRM.OptionSetMetadata",
    "Options": [
      {
        "Value": 727000000,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Appetizer",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Appetizer",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      },
      {
        "Value": 727000001,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Entree",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Entree",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      },
      {
        "Value": 727000002,
        "Label": {
          "@odata.type": "Microsoft.Dynamics.CRM.Label",
          "LocalizedLabels": [
            {
              "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
              "Label": "Dessert",
              "LanguageCode": 1033,
              "IsManaged": false
            }
          ],
          "UserLocalizedLabel": {
            "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
            "Label": "Dessert",
            "LanguageCode": 1033,
            "IsManaged": false
          }
        }
      }
    ],
    "IsGlobal": false,
    "OptionSetType": "Picklist"
  },
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "MultiSelect Choice Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "MultiSelect Choice Attribute",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample MultiSelect Choice",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Sample MultiSelect Choice",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "sample_MultiSelectChoice"
}

Response:

HTTP/1.1 204 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(afd63201-4d05-ee11-8f6e-000d3a993550)

Create an big integer column

The following example uses these properties to create an big integer column.

BigIntAttributeMetadata properties Values
SchemaName sample_BigInt
DisplayName Sample BigInt
Description BigInt Attribute
RequiredLevel None

The following example creates an integer column using the properties and adds it to the sample_bankaccount table.

The URI for the column is returned in the response.

Request

POST [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes
MSCRM.SolutionUniqueName: examplesolution
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json
Authorization: Bearer <access token>
Content-Type: application/json; charset=utf-8
Content-Length: 1301

{
  "AttributeType": "BigInt",
  "AttributeTypeName": {
    "Value": "BigIntType"
  },
  "@odata.type": "Microsoft.Dynamics.CRM.BigIntAttributeMetadata",
  "Description": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "BigInt Attribute",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "BigInt Attribute",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "DisplayName": {
    "@odata.type": "Microsoft.Dynamics.CRM.Label",
    "LocalizedLabels": [
      {
        "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
        "Label": "Sample BigInt",
        "LanguageCode": 1033,
        "IsManaged": false
      }
    ],
    "UserLocalizedLabel": {
      "@odata.type": "Microsoft.Dynamics.CRM.LocalizedLabel",
      "Label": "Sample BigInt",
      "LanguageCode": 1033,
      "IsManaged": false
    }
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "SchemaName": "sample_BigInt"
}

Response

HTTP/1.1 204 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='sample_bankaccount')/Attributes(28b90018-1d99-ee11-be37-000d3a993223)

Update a column

As mentioned in Update table definitions, data model entities are updated using the HTTP PUT method with the entire JSON definition of the current item. This pattern applies to entity attributes and entities. Just like with entities, you can overwrite labels using the MSCRM.MergeLabels header with the value set to false, and you must publish customizations before they're active in the system.

Using the boolean attribute created in Create a Boolean column above, we must first retrieve the entire attribute.

Request:

GET [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='new_bankaccount')/Attributes(LogicalName='new_boolean')/Microsoft.Dynamics.CRM.BooleanAttributeMetadata HTTP/1.1
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json

Response:

HTTP/1.1 OK
OData-Version: 4.0

{
  "@odata.context": "[Organization Uri]/api/data/v9.2/$metadata#EntityDefinitions('new_bankaccount')/Attributes/Microsoft.Dynamics.CRM.BooleanAttributeMetadata/$entity",
  "MetadataId": "38d20735-6817-ed11-b83e-00224837179f",
  "HasChanged": null,
  "AttributeOf": null,
  "AttributeType": "Boolean",
  "ColumnNumber": 35,
  "DeprecatedVersion": null,
  "IntroducedVersion": "1.0.0.0",
  "EntityLogicalName": "new_bankaccount",
  "IsCustomAttribute": true,
  "IsPrimaryId": false,
  "IsValidODataAttribute": true,
  "IsPrimaryName": false,
  "IsValidForCreate": true,
  "IsValidForRead": true,
  "IsValidForUpdate": true,
  "CanBeSecuredForRead": true,
  "CanBeSecuredForCreate": true,
  "CanBeSecuredForUpdate": true,
  "IsSecured": false,
  "IsRetrievable": false,
  "IsFilterable": false,
  "IsSearchable": false,
  "IsManaged": false,
  "LinkedAttributeId": null,
  "LogicalName": "new_boolean",
  "IsValidForForm": true,
  "IsRequiredForForm": false,
  "IsValidForGrid": true,
  "SchemaName": "new_Boolean",
  "ExternalName": null,
  "IsLogical": false,
  "IsDataSourceSecret": false,
  "InheritsFrom": null,
  "CreatedOn": "2022-08-08T22:19:49Z",
  "ModifiedOn": "2022-08-08T22:19:49Z",
  "SourceType": 0,
  "AutoNumberFormat": null,
  "DefaultValue": false,
  "FormulaDefinition": "",
  "SourceTypeMask": 0,
  "AttributeTypeName": {
    "Value": "BooleanType"
  },
  "Description": {
    "LocalizedLabels": [
      {
        "Label": "Boolean Attribute",
        "LanguageCode": 1033,
        "IsManaged": false,
        "MetadataId": "2b5545d2-a59b-4503-8846-95665283b41f",
        "HasChanged": null
      }
    ],
    "UserLocalizedLabel": {
      "Label": "Boolean Attribute",
      "LanguageCode": 1033,
      "IsManaged": false,
      "MetadataId": "2b5545d2-a59b-4503-8846-95665283b41f",
      "HasChanged": null
    }
  },
  "DisplayName": {
    "LocalizedLabels": [
      {
        "Label": "Sample Boolean",
        "LanguageCode": 1033,
        "IsManaged": false,
        "MetadataId": "e6b8d06c-067e-4ab0-a9a8-32f520b25e36",
        "HasChanged": null
      }
    ],
    "UserLocalizedLabel": {
      "Label": "Sample Boolean",
      "LanguageCode": 1033,
      "IsManaged": false,
      "MetadataId": "e6b8d06c-067e-4ab0-a9a8-32f520b25e36",
      "HasChanged": null
    }
  },
  "IsAuditEnabled": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyauditsettings"
  },
  "IsGlobalFilterEnabled": {
    "Value": false,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyglobalfiltersettings"
  },
  "IsSortableEnabled": {
    "Value": false,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyissortablesettings"
  },
  "IsCustomizable": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "iscustomizable"
  },
  "IsRenameable": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "isrenameable"
  },
  "IsValidForAdvancedFind": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifysearchsettings"
  },
  "RequiredLevel": {
    "Value": "None",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "CanModifyAdditionalSettings": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyadditionalsettings"
  },
  "Settings": []
}

Then, change the properties you want to change.

BooleanAttributeMetadata properties Old Values New Values
DisplayName Sample Boolean Sample Boolean Updated
Description Boolean Attribute Boolean Attribute Updated
RequiredLevel None ApplicationRequired

Note

If you want to update the options, you must send a different request. More information: Update options.

Now you can send the PUT request with the modified properties:

Request:

PUT [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='new_bankaccount')/Attributes(LogicalName='new_boolean') HTTP/1.1
MSCRM.SolutionUniqueName: examplesolution
MSCRM.MergeLabels: true
OData-MaxVersion: 4.0
OData-Version: 4.0
If-None-Match: null
Accept: application/json

{
  "@odata.type": "Microsoft.Dynamics.CRM.BooleanAttributeMetadata",
  "MetadataId": "e160ff9b-6f17-ed11-b83e-00224837179f",
  "HasChanged": null,
  "AttributeOf": null,
  "AttributeType": "Boolean",
  "ColumnNumber": 35,
  "DeprecatedVersion": null,
  "IntroducedVersion": "1.0.0.0",
  "EntityLogicalName": "new_bankaccount",
  "IsCustomAttribute": true,
  "IsPrimaryId": false,
  "IsValidODataAttribute": true,
  "IsPrimaryName": false,
  "IsValidForCreate": true,
  "IsValidForRead": true,
  "IsValidForUpdate": true,
  "CanBeSecuredForRead": true,
  "CanBeSecuredForCreate": true,
  "CanBeSecuredForUpdate": true,
  "IsSecured": false,
  "IsRetrievable": false,
  "IsFilterable": false,
  "IsSearchable": false,
  "IsManaged": false,
  "LinkedAttributeId": null,
  "LogicalName": "new_boolean",
  "IsValidForForm": true,
  "IsRequiredForForm": false,
  "IsValidForGrid": true,
  "SchemaName": "new_Boolean",
  "ExternalName": null,
  "IsLogical": false,
  "IsDataSourceSecret": false,
  "InheritsFrom": null,
  "CreatedOn": "2022-08-08T23:12:55Z",
  "ModifiedOn": "2022-08-08T23:12:55Z",
  "SourceType": 0,
  "AutoNumberFormat": null,
  "DefaultValue": false,
  "FormulaDefinition": "",
  "SourceTypeMask": 0,
  "AttributeTypeName": {
    "Value": "BooleanType"
  },
  "Description": {
    "LocalizedLabels": [
      {
        "Label": "Boolean Attribute Updated",
        "LanguageCode": 1033,
        "IsManaged": false,
        "MetadataId": "b370f0dd-329f-434e-8b9f-b6eb47d0141f",
        "HasChanged": null
      }
    ],
    "UserLocalizedLabel": {
      "Label": "Boolean Attribute Updated",
      "LanguageCode": 1033,
      "IsManaged": false,
      "MetadataId": "b370f0dd-329f-434e-8b9f-b6eb47d0141f",
      "HasChanged": null
    }
  },
  "DisplayName": {
    "LocalizedLabels": [
      {
        "Label": "Sample Boolean Updated",
        "LanguageCode": 1033,
        "IsManaged": false,
        "MetadataId": "63a9e5f1-e730-40cb-a410-495367d5856d",
        "HasChanged": null
      }
    ],
    "UserLocalizedLabel": {
      "Label": "Sample Boolean Updated",
      "LanguageCode": 1033,
      "IsManaged": false,
      "MetadataId": "63a9e5f1-e730-40cb-a410-495367d5856d",
      "HasChanged": null
    }
  },
  "IsAuditEnabled": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyauditsettings"
  },
  "IsGlobalFilterEnabled": {
    "Value": false,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyglobalfiltersettings"
  },
  "IsSortableEnabled": {
    "Value": false,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyissortablesettings"
  },
  "IsCustomizable": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "iscustomizable"
  },
  "IsRenameable": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "isrenameable"
  },
  "IsValidForAdvancedFind": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifysearchsettings"
  },
  "RequiredLevel": {
    "Value": "ApplicationRequired",
    "CanBeChanged": false,
    "ManagedPropertyLogicalName": "canmodifyrequirementlevelsettings"
  },
  "CanModifyAdditionalSettings": {
    "Value": true,
    "CanBeChanged": true,
    "ManagedPropertyLogicalName": "canmodifyadditionalsettings"
  },
  "Settings": []
}

Response:

HTTP/1.1 NoContent
OData-Version: 4.0
OData-EntityId: [Organization Uri]/api/data/v9.2/EntityDefinitions(LogicalName='new_bankaccount')/Attributes(LogicalName='new_boolean')

See also

Use the Web API with Microsoft Dataverse metadata
Create and update table definitions using the Web API
Query table definitions using the Web API
Retrieve table definitions by name or MetadataId
Model table relationships using the Web API
Work with table definitions using the SDK for .NET
Column (attribute) definitions
Web API table schema operations sample
Web API table schema operations sample (C#)