They are z/OS system variables. They are and can be resolved without using a scheduling package using standard JCL and PROCS
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TSYS
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Original Message:
Sent: 06-28-2019 01:36 PM
From: Grace Strauther
Subject: System symbolics
System symbolic are normally resolved with the use of JCLCheck option JOBT(S). But these do not look like system symbol variables but rather a scheduling package related symbolic. Please open a case with JCLCheck and we can assist you with the use of scheduling package interface to resolve the symbolic.
Original Message:
Sent: 06-28-2019 01:25 PM
From: Ken Jenkins
Subject: System symbolics
We are running version 12 and JCLCHECK is saying that &MMDDYY is an invalid symbolic also &HHMMSS as well as LMMDDYY and LHHMMSS etc. However the jobs run with no problem and with the correct substitution.