ARC0603I
DFSMSHSM WAS UNABLE TO UPDATE THE CAPACITY OF VOLUME volser, RC = retcode

Explanation

DFSMShsm failed to update its inventory with the new capacity for volume volser. The values for retcode are:
Retcode
Meaning
8
A CDS I/O error occurred.
20
Internal error occurred.

System action

DFSMShsm processing continues.

Programmer response

Retcode
Response
8
See the corresponding ARC0184I message for additional information.
20
DFSMShsm can only process 170 concurrent DASD dynamic volume changes. Restrict your process for changing the capacity of volumes to 170 concurrently. DFSMShsm uses the previous capacity for the volume until DFSMShsm is restarted.

Source

DFSMShsm