Kunal For your clarification eoprcsnm.sqc is delivered by PeopleSoft that contain

!********************************
begin-procedure Get-Process-Name (#prcs_process_instance, :$prcsname)
!********************************
Begin-SELECT 
P.PRCSNAME  
FROM PSPRCSRQST P
WHERE P.PRCSINSTANCE = #prcs_process_instance

End-SELECT
  
   let $prcsname = RTRIM(&P.PRCSNAME,' ') 

End-Procedure !Get-Process-Name

So either you can include eoprcsnm.sqc file at bottom of your primary sqr programme then call

do Get-Process-Name (#prcs_process_instance, $prcsname)

where you need.
As i mention in the blog post if you think that i will not include the sqc file then simplay copy paste the procedure code in your sqr programme and call them.
hopefully you can get understand easily, also let me knwo if any doubt.