RFCs calling from remote systems

Question

Hello Abapers,
Can anyone tell me how to find the list of programs which are calling remote function modules? For example programs in CRM system calling function modules in ECC...
Thanks,
Himadama

Answer 1

Hi,
this is only ardly possible depending on your goal.
There are lots of RFC calls especially in CRM for middleware purposes.
Option a) - You try to find all pla ces where z*modules are called that are not existing in CRM
Option b) - You want to find all RFC enabled modules of ERP called in  CRM
Option c) - You want to find all RFC calls in CRM targeting the defaulting ERP destination
Solution for  a)
- Go to table WBCROSS (which is global the "where used list")
   and check for all Z* modules 
- Copy the list of modules e.g. in a file 
- Search table trdir (registry of function modules) with this list
  -> all modules that are not in this list are probably RFC modules from a backend
Solution for  b)
- Go to ERP SE37 and open the help
- open the advanced options
- mark "RFC modules"
- search and save the whole list of RFCs relevant
- Go to CRM and check table WBCROSS where these modules are used
Solution for  c)
- go to CRM and check for a module called "SMOFERP" or similar
  It returns the name of the default RFC destination of an CRm system to its default ERP.
- Check the where used list of this module - should guide you close to the calls
mfg,