Problem with the program RFBIBL00

Hi Friends

There is one program already existing in our current system to post the documents using t-code 'FB01'

through the program RFBIBL00, but they have designed initially for customers only, now we want to use the same program for Vendors too. We are using the posting keys '09' and '19'. do we need to change the posting keys to post the vendors.

Can you please reply me ASAP, coz this is very urgent requirement to us.

Thanks and Regards

Praveen