Answer Posted / syam

A service program is a collection of runnable procedures
and available data items easily and directly accessible by
other ILE programs or service programs. In many respects, a
service program is similar to a subroutine library or
procedure library.
Once we have the binder language we want to use in a source
member,it is compiled at the time we create the service
program Create Service Program (CRTSRVPGM).

Binder language is stored in physical file members, like
RPG, CL, and DDS source code.

CUSTPROCS service program Source member type BND
example.

STRPGMEXP PGMLVL(*CURRENT)
EXPORT SYMBOL(GetCustInfo)
EXPORT SYMBOL(SearchByPhone)
EXPORT SYMBOL(ValidCust)
ENDPGMEXP

Signature in Binder

Hard-Coded Signature Values:

One way a hard-coded signature can be used to our advantage
is to put some meaningful information into the signature
for documentation purposes.
for example: the date, the time, or other usefulinformation
about the new version of the service program.

STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('CUSTPROCS19SEP07')
EXPORT SYMBOL(GetCustInfo)
EXPORT SYMBOL(SearchByPhone)
EXPORT SYMBOL(ValidCust)
ENDPGMEXP

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