Knowledge Management

Question:
Hello!!
I am having problems with prtner functions. Now I have a vendor A with invoicing party as B as its partner function. Now when I am making a P.O for vendor A, and I go to the P.O. header level data and on the partner tab only the ordering address and Vendor address are populating and not the Invoice party address B. Any idea why???
Thnaks
SK>
Answer:
Have you defined a partner schema for purchasing documents in OMZ6?
Have you then assigned this to the document types in OMZ7?