Not sure what system identifier is used, but can it be that your couple datasets have more system records than what you're currently using? Systems that were in the plex but have been removed or renamed? One of your active systems might have number 07 while 04,05 and 06 are no longer around. Bart
-----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Peter Hunkeler Sent: Friday, February 19, 2016 4:15 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: System Identifier in low level qualifier of name of temporary data set JCL reference explains how the name of a temporary data set is built by the system. The low level qualifier will be either "Rggnnnnn" or "Hgg". The manualy says "gg" is the *system identifier* of the system which interpreted the JCL (for static DDs) or which is executing the job (for dynallocs). On our four-way sysplex, I just saw values 02 an 07, which puzzles me. I could not find where the two digit *system identifier* is coming from. Any idea? -- Peter Hunkeler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN