Table UPDATE statements on the same Warehouse table.

Hi Abdul_Ismail,

Thank you tayloramy, for your insights.

This issue happens because parallel UPDATE statements on the same table create write-write conflicts under snapshot isolation in Microsoft Fabric. To fix this, avoid updating rows in parallel and use a set-based method like staging with MERGE or batch updates to minimize concurrent transactions. If necessary, run the ForEach activity sequentially (batch count = 1) and include retry logic to manage transient conflicts.

Transactions in Fabric Data Warehouse - Microsoft Fabric | Microsoft Learn

Troubleshoot the Warehouse - Microsoft Fabric | Microsoft Learn

Thank you.