Currently, error messages in DMF are only displayed in the Staging Data form and only for individual rows. It is difficult to get or provide an overview of errors, especially on larger imports. Provide a error message summary (on a separate tab on the staging table data form).

I've been summarizing the error messages in SQL...

SELECT cs.value AS [Message], COUNT(1) AS [Count]
FROM CUSTCUSTOMERV3STAGING a
JOIN DMFSTAGINGVALIDATIONLOG b ON b.EXECUTIONID=a.EXECUTIONID AND b.STAGINGRECID=a.RECID
CROSS APPLY STRING_SPLIT (ERRORMESSAGE, CHAR(10)) cs
WHERE a.EXECUTIONID=''
GROUP BY cs.value ORDER BY 1