Diagnosis
The system tried to update the user type of &V1& users in table usr06(update from an internal table). The update worked for &V2& records butan error occurred with the &V3& records because the system could notfind them in the DB table.
Another user may have deleted or changed the &V3& recordssimultaneously .

System Response
Program termination.

Procedure
Restart the migration. If the error occurs again, report it to SAP.