The wait time used for open or end-of-volume (EOV) processing of a tape data set cannot be measured because of an error in attempting to set the system timer. If the tape with volume serial number volser is available and can be mounted, reply Y. Otherwise, reply N. If the reply is N, open or EOV fails and the current DFSMShsm task is detached.
The current DFSMShsm task waits until a reply is received. If the reply is Y, DFSMShsm waits for mount completion. If the reply is N, the mount request ends and the DFSMShsm function (migration, recall, backup, recovery, or recycle) ends if the mount was for an input volume or continues using another volume, if the mount was for an output volume.
If the tape with volume serial number volser is available and can be mounted, reply Y and mount the specified tape. If the tape cannot be found, reply N.
DFSMShsm