Link Between Material Document and Accounting Document Tables

Hi Abapers,

Can u pls tell me, How can i link Material Document Tables (MSEG and MKPF) and FI tables (BSEG and BKPF)?

The actual scenerio is when we confirm order in Production Planning. I want to pickup value from FI tables.

Thanx in advance.

Regards,

S.GUNA