DMGDYNAL S0C4 U0000 PSW VDSINTRP+000E6C00

Document ID : KB000100293
Last Modified Date : 11/06/2018
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Issue:
When a z/os dynamic I/O change is in progress, and CA Allocate is in its  volume selection function for an allocation, there is a rare chance of an
 abend S0C4.
  SYMPTOMS:
 IEA995I SYMPTOM DUMP OUTPUT
 SYSTEM COMPLETION CODE=0C4  REASON CODE=00000004
 DATA AT PSW  xxxxxxxx - D2037000  40004177  00044144
Resolution:
ST03707 test apar has been written for this new defect. 
CIRCUMVENTION:
Quiesce the z/os system before implementing the dynamic I/O change.