BJTZ218 Invalid Exists. Only Leave, Replace, or Extend are allowed.

Explanation An invalid value was specified in the Exists field.
This field indicates what Output Manager should do if an
archive already exists.  

User response In the Exists field, type one of the following valid
values:  
Replace - To replace the data in the archive with the new data

Leave - To leave the old data in the archive and not update it,
and to keep the new data on the spool  

Extend - To write the new data at the end of the old archive data
set  