7413 Current of cursor row no longer exists.
The current of cursor row that the user is trying to modify no longer exists due to the fact that the row has been changed by another request.
StpRet, StpUpd, StpDel.
Should only receive this error if in an updatable cursor txn and the FOR CHECKSUM locking modifier was specified when the rows were selected.
If still want to modify the specified row through a cursor, must commit or abort current updatable cursor txn, start a new one, and re-submit statement.