When performing an ETL refresh, the following error may be returned:
Error: 2018-07-17 03:28:41.13 Code: 0xC002F210 Source: Upsert into Membership Revenue Execute SQL Task Description: Executing the query "merge BBDW.[FACT_MEMBERSHIPREVENUE] as t using ( ..." failed with the following error: "The MERGE statement attempted to UPDATE or DELETE the same row more than once. This happens when a target row matches more than one source row. A MERGE statement cannot UPDATE/DELETE the same row of the target table multiple times. Refine the ON clause to ensure a target row matches at most one source row, or use the GROUP BY clause to group the source rows.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly. End Error
We are currently evaluating this issue and will update this article when we have more information.