Sync userPrincipalName fo Azure AD to custom attribute in on Prem AD

Question

Hi, I created a custom Attribute on the active directory on Prem following this guide: https://windowstechno.com/how-to-create-custom-attributes-in-active-directory/ . The local attribute created is called userPrincipalNameAzureAD . I need to modify the sync rules so that when the sync happens the Azure AD "userPrincipalName" attribute is copied to the active directory's "userPrincipalNameAzureAD" attribute on prem. I tried to edit the rules of the connector but the drop-down menu doesn't offer me "userPrincipalNameAzureAD" from the Local active directory. Does anyone have any suggestions?

Best Regards

Answer 1

You can create directory extensions in AADConnect to sync on-prem> Azure:

https://learn.microsoft.com/en-us/azure/active-directory/hybrid/connect/how-to-connect-sync-feature-directory-extensions

It wont sync from Azure > on-prem however...

Answer 2

Hi, i need to sync as follow

Azure AD > OnPrem AD

userPrincipalName > userPrincipalNameAzureAD

The attribute extensions sync OnPrem > Azure

Thansk and Recarda

Answer 3

Sorry, thats not possible with any built-in architecture. There is no automatic sync in that direction (Azure> On-Prem) and there is no writeback for Azure properties like that using AADConnect or AD Cloud Sync.