The dynamic change to the I/O configuration is still waiting for the old Eligible Device Table (EDT) to be deleted.
The system cannot perform any ACTIVATE requests or DDR swaps until outstanding allocation requests against the old EDT have been satisfied. Message IOS513E is re-issued every fifteen minutes until all outstanding allocation requests are satisfied, at which time message IOS501I is issued.
Issue the 'D IOS,CONFIG(EDT)' command to determine what jobs have outstanding binds on the secondary (old) EDT. Satisfy the outstanding allocation requests by either mounting the requested volumes, canceling the job, or canceling the address space.
Input/output supervisor (IOS)
IOSVCMMN