Backend creation of follow on documents - debugging issue

Hello all,

EBP 5.0, R/3 4.7

at the moment I am debugging BBP_REQREQ_TRANSFER function to found out why I am getting Purchase Requisitions instead of Purchase Orders in the backend R/3.

The problem is that I cannot find exact function when EBP is going to the backend system to test which document can be created. I am now pressing F5 and F6 for hours and still did not found this :o(

Before loosing my eyes on this can somebody give me a hint where I should put breakpoint to "dive" in R/3 from EBP.

Appreciated

Gordan