SQL$HELP72.HLB  —  Errors  SQL_ERRORS, UDCURDEL
  Cursor in fetch, update or delete, positioned on a deleted
  record

  Explanation:  You attempted to perform a positioned UPDATE or
  DELETE on a row that has already been deleted or you attempted
  to fetch a row that no longer exists.

  User Action:  Do not attempt to FETCH, UPDATE or DELETE this row
  again.
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