Merge pull request #236642 from jonburchel/patch-36

Update synapse-service-identity.md

Author: prmerger-automator[bot]

articles/synapse-analytics/synapse-service-identity.md

@@ -320,6 +320,9 @@ You can create, delete, manage user-assigned managed identities in Azure Active
 
 In order to use a user-assigned managed identity, you must first [create credentials](../data-factory/credentials.md) in your service instance for the UAMI.
 
+>[!NOTE]
+>  User-assigned Managed Identity is not currently supported in Synapse notebooks and Spark job definitions.
+
 ## Next steps
 - [Create credentials](../data-factory/credentials.md).