: Another user or a background system task is currently editing the I/O configuration (IODF), preventing your job from obtaining the "Exclusive" lock. Missing Definition : The specific

for RACF) in the system log to find a more detailed error code. Audit Security Profiles

In CICS, use CEMT I TASK to see if another transaction holds an exclusive ENQ on the same record or file. The error may be a side effect of a timeout: the key was missing or the exclusive enqueue timed out, returning the same message.