Ok, thanks for the information. This is a bit over my head then. I thought RB was a generic thing, but I think it is a part of the OS that I don't understand well. Yet.
But to be clear, a SDB abend means there was no module in memory (defined) found called either IGX00219 or IGC0021I, and the module was never called? Then when do I get a S16D? That also happens when I call a non-existent SVC. Perhaps a better way to phrase my question would be that what did I receive a SDB abend when I expected a S16D abend. The fix is the same either way by the way, I know that now. Best regards, Lindy -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Peter Relson Sent: Wednesday, October 14, 2015 3:06 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: What is a request block prefix? As others have said: "Request Block" = RB (mapped by IHARB / IKJRB). The 64 bytes before the beginning of the RB are the RB prefix (RBPRFX in IHARB, RBPREFIX in IKJRB). For those in the know, it's actually the "32 bytes before" but the mapping is of the 64 bytes. But for an Fxx abend, you would almost never care. As Skip mentioned, a Fxx abend is "you issued an SVC that is not defined". Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
