We have a custom partner function type ZZ. It is on the the billing doc header. However, when we create the IDoc INVOIC02, it does not come down into E1EDKA1 with the other partner functions on the billing doc header.
There are also PARVWs BK and RS coming down in E1EDKA1, although they are not on the billing doc. This is not a problem, however I can't figure out where they are coming from?
Is there some table I need to maintain with my ZZ partner function?
Thanks for any advice.