Add error code UserErrorUnsupportedAttributeType

Author: Clare-Zheng82

articles/data-factory/connector-troubleshoot-dynamics-dataverse.md

@@ -6,7 +6,7 @@ author: jianleishen
 ms.service: data-factory
 ms.subservice: data-movement
 ms.topic: troubleshooting
-ms.date: 12/02/2021
+ms.date: 06/17/2022
 ms.author: jianleishen
 ms.custom: has-adal-ref, synapse
 ---
@@ -144,6 +144,14 @@ This article provides suggestions to troubleshoot common problems with the Dynam
 
 - **Recommendation**: You can add the 'type' property to those columns in the column mapping by using JSON editor on the portal. 
 
+## Error code: UserErrorUnsupportedAttributeType
+ 
+- **Message**: `The attribute type 'Lookup' of field %attributeName; is not supported` 
+ 
+- **Cause**: When loading data to the Dynamics sink, Azure Data Factory (ADF) by design would impose validation on the lookup attribute's metadata. However, there's the known issue of certain Dynamics entities not having valid lookup attribute metadata that holds a list of targets, which would fail ADF's validation.
+
+- **Recommendation**: Contact Dynamics support team to mitigate the issue.
+
 ## The copy activity from the Dynamics 365 reads more rows than the actual number
 
 - **Symptoms**: The copy activity from the Dynamics 365 reads more rows than the actual number.