https://www.ibm.com/docs/en/ims/15.4.0?topic=trace-dfscnc40-io-request-die-routine
IMS 15.4 - Diagnosis - DFSCNC40 (I/O request DIE routine)
The only modules that manipulate the LXB trace stack are the CTC access method modules, DFSCMC00, DFSCMC10, DFSCMC40, and DFSCMC50. The values and meaning of...
imsdiagnosisrequestdieroutine