Application Runtime for IMS Reference Guide Oracle Tuxedo Application Runtime for IMS Reference Guide Tuxedo ART for IMS DL/I Support Message Processing GUID Parameter(s) 1.2.2.8.4 Parameter(s) I/O PCB Pointer to the PCB that represents the source of the request. I/O Area Pointer to a buffer to be filled in with the full username, besides LLZZ, at least 30 bytes should be prepared. Parent topic: GUID