Only  one  executor  can  be  specified   for   a   BATCH_UPDATE
  transaction

  Explanation:  An attempt to execute a  parallel  load  operation
  was  attempted  with multiple execurors and the TRANSACTION_TYPE
  set to BATCH_UPDATE.

  User Action:  Specify another  transaction_type,  do  not  do  a
  parallel load operation, or only specify one executor.