Checking to make sure OPS/MVS 12.3 is not using PSASTAK

Document ID : KB000115395
Last Modified Date : 20/09/2018
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ACTION: RSU1807 APAR OA55233(UA96475) and products that may be using PSASTAK ACTION: Software must no longer reference the IHAPSA field PSASTAK With this PTF, PSASTAK is no longer the beginning of the normal FRR stack. PSACSTK is an existing pointer to the beginning of the normal FRR stack. Software that references PSASTAK must be converted to use PSACSTK as the pointer to the normal FRR stack.  Is PSACSTK referenced by OPS/MVS?
OPS/MVS 12.3 does not reference PSASTAK.