How to avoid the messages TPXL5130 and TPXL5131 being written into the TPXLOG?
TPX® Session Management for z/OS
When using TPX as a Generic Resource then you will find messages TPXL5130 and TPXL5131 logging on in the TPX Log for every User:
TPXL5131 <day> <time> CA-TPX CMPL EXIT DRIVEN, RC=00000000, RSN=00000000
TPXL5130 <day> <time> CF-REQ: Func=0000, Rc=00000008, Rsn=0C1C0825, Lst#=0000, Enty=xxxx
TPXL5131 <day> <time> CA-TPX CMPL EXIT DRIVEN, RC=00000008, RSN=0C1C0825
TPXL5130 <day> <time> CF-REQ: Func=0000, Rc=00000008, Rsn=0C1C0825, Lst#=0000, Enty=xxxx
These messages protocol a request to the Coupling Facility. They are informational if the logon request is successful and are helpful in case a problem occurs.
The Return and Reason Codes are documented in the IBM manual "Abstract for MVS Programming: Sysplex Services Reference Return and Reason Codes".