A1C

Explanation
The Device Manager Address Space (DEVMAN) encountered
an unexpected error. The reason code is in register 15 at the time
the system issues the abend. Code
Explanation
0001
The DEVMAN VTOC Convert Routine call to UCBLOOK failed.
0002
The DEVMAN VTOC Convert Routine call to DSPSERV to extend the
data space failed.
0003
The DEVMAN VTOC Convert Routine encountered an unexpected error
processing the VTOC DSCBs.

System action
The system writes an SVC Dump.

System programmer response
Search problem reporting databases
for a fix for the problem. If no fix exists, contact the IBM® Support Center.

Source
DFSMSdfp