Is it possible to debug one RFC function module of SAP R3 4.6C from SAP PI?

Hi Experts,

I am a SAP ABAP developer and there is no mechanism in place(as of now) to see if the data from PI has come to SAP.

Is it possible to debug in SAP R3 4.6 C system from PI system?

It may be an irrelevant question from PI point of view but I need an answer. Thanks a lot

Mohit