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onPremisesExtensionAttributes resource type

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Namespace: microsoft.graph

Important

APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.

The return type of the onPremisesExtensionAttributes property of the user object and extensionAttributes property of the device object. Returns fifteen custom extension attribute properties. Each attribute can store up to 1024 characters.

On the user entity and for an onPremisesSyncEnabled user, the source of authority for this set of properties is the on-premises Active Directory that is synchronized to Microsoft Entra ID, and is read-only. For a cloud-only user (where onPremisesSyncEnabled is false or null), these properties can be set during creation or update. If a cloud-only user was previously synced from on-premises Active Directory, these properties can't be managed via the Microsoft Graph API. Instead, they can be managed through the Exchange Admin Center or the Exchange Online V2 module in PowerShell.

The extensionAttributes property of the device entity is managed only in Microsoft Entra ID during device creation or update.

Note: These extension attributes are also known as Exchange custom attributes 1-15.

Properties

Property Type Description
extensionAttribute1 String First customizable extension attribute.
extensionAttribute2 String Second customizable extension attribute.
extensionAttribute3 String Third customizable extension attribute.
extensionAttribute4 String Fourth customizable extension attribute.
extensionAttribute5 String Fifth customizable extension attribute.
extensionAttribute6 String Sixth customizable extension attribute.
extensionAttribute7 String Seventh customizable extension attribute.
extensionAttribute8 String Eighth customizable extension attribute.
extensionAttribute9 String Ninth customizable extension attribute.
extensionAttribute10 String Tenth customizable extension attribute.
extensionAttribute11 String Eleventh customizable extension attribute.
extensionAttribute12 String Twelfth customizable extension attribute.
extensionAttribute13 String Thirteenth customizable extension attribute.
extensionAttribute14 String Fourteenth customizable extension attribute.
extensionAttribute15 String Fifteenth customizable extension attribute.

Relationships

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JSON representation

The following JSON representation shows the resource type.

{
      "extensionAttribute1": "string",
      "extensionAttribute2": "string",
      "extensionAttribute3": "string",
      "extensionAttribute4": "string",
      "extensionAttribute5": "string",
      "extensionAttribute6": "string",
      "extensionAttribute7": "string",
      "extensionAttribute8": "string",
      "extensionAttribute9": "string",
      "extensionAttribute10": "string",
      "extensionAttribute11": "string",
      "extensionAttribute12": "string",
      "extensionAttribute13": "string",
      "extensionAttribute14": "string",
      "extensionAttribute15": "string"
  }