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Transformations

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With a transformation, you can change the default behavior of how an attribute is synchronized with Microsoft Entra ID by using cloud sync.

To do this task, you need to edit the schema and then resubmit it via a web request.

For more information on cloud sync attributes, see Understanding the Microsoft Entra schema.

Retrieve the schema

To retrieve the schema, follow the steps in View the synchronization schema.

Custom attribute mapping

To add a custom attribute mapping, follow these steps.

  1. Copy the schema into a text or code editor such as Visual Studio Code.

  2. Locate the object that you want to update in the schema.

    Screenshot of object in the schema.

  3. Locate the code for ExtensionAttribute3 under the user object.

                            {
                            "defaultValue": null,
                            "exportMissingReferences": false,
                            "flowBehavior": "FlowWhenChanged",
                            "flowType": "Always",
                            "matchingPriority": 0,
                            "targetAttributeName": "ExtensionAttribute3",
                            "source": {
                                "expression": "Trim([extensionAttribute3])",
                                "name": "Trim",
                                "type": "Function",
                                "parameters": [
                                    {
                                        "key": "source",
                                        "value": {
                                            "expression": "[extensionAttribute3]",
                                            "name": "extensionAttribute3",
                                            "type": "Attribute",
                                            "parameters": []
                                        }
                                    }
                                ]
                            }
                        },

  4. Edit the code so that the company attribute is mapped to ExtensionAttribute3.

                                     {
                                     "defaultValue": null,
                                     "exportMissingReferences": false,
                                     "flowBehavior": "FlowWhenChanged",
                                     "flowType": "Always",
                                     "matchingPriority": 0,
                                     "targetAttributeName": "ExtensionAttribute3",
                                     "source": {
                                         "expression": "Trim([company])",
                                         "name": "Trim",
                                         "type": "Function",
                                         "parameters": [
                                             {
                                                 "key": "source",
                                                 "value": {
                                                     "expression": "[company]",
                                                     "name": "company",
                                                     "type": "Attribute",
                                                     "parameters": []
                                                 }
                                             }
                                         ]
                                     }
                                 },

  5. Copy the schema back into Graph Explorer, change the Request Type to PUT, and select Run Query.

    Run Query

  6. Now, in the portal, go to the cloud sync configuration and select Restart provisioning.

  7. After a little while, verify the attributes are being populated by running the following query in Graph Explorer: https://graph.microsoft.com/beta/users/{Azure AD user UPN}.

  8. You should now see the value.

    The value appears

Custom attribute mapping with function

For more advanced mapping, you can use functions that allow you to manipulate the data and create values for attributes to suit your organization's needs.

To do this task, follow the previous steps and then edit the function that's used to construct the final value.

For information on the syntax and examples of expressions, see Writing expressions for attribute mappings in Microsoft Entra ID.

Next steps