RE-BP EDPAR

Hello SD Experts,

My doubt regarding to RE to BP in EDPAR table, lets say if we put RE in the partner function it converts to BP.(SE16N).

Shows the report with BP not RE.

If we check in SE16/SE11 system will show the report with RE along with client.

But my question is i have seen the screen shot From EDPAR table with RE (client shared the image).

That image is not from SE11/SE16 but that Image from se16n..

Why I am asking this question is back-end logic should work RE to BP AND BP to RE in order to come values from EDPAR to IDOC.

How to check this partner is under RE only????

Thanks a lot