How to get caller system within called RFC enabled FM

[Former Member]

Hello,

I'm writing a RFC (remote enabled) function module which will be called by different other SAP systems.
Within this called function module, I like to get the caller's system ID.

Is there any way to get this information, maybe a function module/table I can use for this purpose?

Thanks,

Stephan.

[ThomasZloch]

I suppose the easiest way would be just have SY-SYSID passed by the caller as an input parameter into your function module. I don't know of another way, and if there is one, it is probably much more complex.

Thomas

[Former Member]

Hello,

thanks for your response. Yes, I suppose as well that this is the most easiest way. But this has impact on all existing RFC partners and just those which I don't know. In other words: I need to investigate which caller is really connecting to my RFC enabled FM.

Yours
Stephan.

[jack_graus2]

Hi Stephan, you could call RFC destination BACK from within your RFC function module. Destination BACK calls the calling RFC system. When you call function module 'RFC_SYSTEM_INFO' the sytem ID will be returned in function module parameter RFCSI_EXPORT-RFCSYSID.

Here is an example:

  DATA rfcsi TYPE rfcsi.
  CALL FUNCTION 'RFC_SYSTEM_INFO' DESTINATION 'BACK'
    IMPORTING
      rfcsi_export = rfcsi.

Best regards Jack

[aditya_palekar]

Hi Jack,

Thanks. Your advice helped in my project too.

Best Regards

Aditya