OB8603 DDNAME NOT AVAILABLE. SYSOUT USED
Explanation
The ddname specified is not allocated or is in use by another session.
System action
The system used SYSOUT.
User response
If the ddname is not being used by another session, correct the spelling or allocate the intended ddname and retry the reset command. If it is in use by another session, use another ddname, wait for the other session to be done, or accept the system use of SYSOUT.