area <num> within index "<str>" is not reserved

  Explanation:  Your program began a transaction  by  reserving  a
  list  of  relations  and  specifying particular access modes for
  certain partitions.  The referenced partition was  not  included
  in the list.

  User Action:  Examine and correct the SET TRANSACTION statement.
  These  errors  may  occur  when applications or RMU/LOAD if some
  constraints  are  being  evaluated  which  require   access   to
  partitions not reserved by the transaction.