Online program releases a batch job. Need to pick test vs prod JCL. Using EXEC CICS ASSIGN APPLID and branching on a letter in the name.
Works. Feels sketchy. Better pattern?
APPLID works and every shop has done it. Downside: testers never run the prod branch.
Cleaner: program always reads a short skeleton or PROC name from a VSAM/DB2 row that differs per region. Same load module everywhere. ENV is data, not IF APPLID logic.
Moved the job card bits to a control file per region. Program stopped caring which APPLID it was on.
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