Message : CPD4339
Join to-field &3 in join logical file not valid.
Message Long Text :
Cause . . . . . : Join to-field &3 in join item &2 for join file reference &1 was found in a secondary file of join logical file &4 in library &5. Join to-fields must only join to the primary file of a join logical file. This also applies to any fields which contribute to any derivation of the join field.