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It's rather simple in a way. But saying that, it basically took a 2x2 to the side of my head to grasp it.

Rebinding all programs is one way.

Another way is to know these a few things.
1 - Service programs can have multiple signatures
DSPSRVPGM SRVPGM(...) DETAIL(*SIGNATURE)
2 - You can set those signatures with "binder language". Binder language has three commands only: STRPGMEXP, EXPORT and ENDPGMEXP. The STRPGMEXP has the signature in it. That binder source can have multiple signatures. Example:
STRPGMEXP PGMLVL(*CURRENT) LVLCHK(*YES) SIGNATURE(*GEN)
EXPORT SYMBOL("...")
...
ENDPGMEXP
STRPGMEXP PGMLVL(*PRV) LVLCHK(*YES) SIGNATURE(*GEN)
EXPORT SYMBOL("...")
...
ENDPGMEXP

Instead of *GEN you could use some version number or something. For example, the version of software you're releasing. (If you're a vendor).

You can see this signature in the programs which use this service program with
DSPPGM PGM(...) DETAIL(*SRVPGM)

These services may be helpful:
https://www.ibm.com/docs/en/i/7.5?topic=services-program-info-view
https://www.ibm.com/docs/en/i/7.5?topic=services-bound-srvpgm-info-view

Like, what programs are using this service program? And what signature are they using?
select *
from qsys2.BOUND_SRVPGM_INFO
where program_library = 'ROUTINES'
and bound_service_program = 'SRVPGM'
;





Rob Berendt

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