topic Re: RFC Function Call in Application Development and Automation Discussions

RFC Function Call

Former Member — Thu, 06 Dec 2007 15:44:50 GMT

Hi Guys,

Do we need to have RFC function module existed in the system we are calling?

I have a requirement like this...

I created a RFC FM in system A and trying to get data from system B, but giving a short dump while executing.

RFC FM is exist only in system A but not in system B.

can somebody explain me on this?

thanks in advance...

Sailesh

Re: RFC Function Call

Former Member — Thu, 06 Dec 2007 15:48:10 GMT

Yes, the RFC must exist in the system where it is to be called. (B)

It doesn't have to exist in the system that calls the RFC. (A)

Re: RFC Function Call

Former Member — Thu, 06 Dec 2007 15:53:04 GMT

Hi Daniel,

Thanks for the reply.

Is there any way we can do this with out creating the FM in system B? because, i do not know at this moment, what are the systems i am going to call?

sailesh

Re: RFC Function Call

former_member199581 — Thu, 06 Dec 2007 16:37:35 GMT

You cannot call an RFC-Enable FM if this doesn't exist in target system.

Yu can only handle old-type exception such as SYSTEM_FAILURE and COMMUNICATION_FAILURE, assigning to them a specific return code:


CALL FUNCTION 'RFC_SYSTEM_INFO' 
    DESTINATION rfcdest
     EXCEPTIONS 
      system_failure        = 1  MESSAGE mess   "This
      communication_failure = 2  MESSAGE mess   "This
      resource_failure      = 3.

If the FM is then not founded in the target system, sy-subrc is set accordingly to the value you inserted for SYSTEM_FAILURE and COMMUNICATION_FAILURE.

I.E.


CASE sy-subrc.
 WHEN 1 OR 2 OR 3.
  MESSAGE 'RFC Error' TYPE 'E'.
 WHEN OTHERS.
ENDCASE

Hope this helps.

Roby.

Re: RFC Function Call

Former Member — Thu, 06 Dec 2007 16:39:46 GMT

Hi Sailesh,

To call the RFC you need to pass Destination value, there is no other option.

Regards,

Satish

Re: RFC Function Call

Former Member — Thu, 06 Dec 2007 16:56:32 GMT

Yes it needs to be the target syatem, (B). however it will be used in the source system (A). In addition you have to create a destination in the source system using Transaction SM59. IN sm59 you have to specify the details about the target system (b).

Hope this helps.

Shreekant

Re: RFC Function Call

Former Member — Fri, 07 Dec 2007 16:33:24 GMT

Thanks for the information.

Is there anyway or FM, we can find, if the given function module exist in target system or not? So that, atleast i can capture the return code and give a warning message and avoid a dump.

shylesh

Re: RFC Function Call

Former Member — Fri, 07 Dec 2007 17:08:58 GMT

I found it myself