Hi again.
I have made a program which posts account documents through the BAPI_ACC_DOCUMENT_POST function module, and, since there were some fields which weren't available for me to fill having the FM by itslef, I have implemented the AC_DOCUMENT BAdI.
All document data is provided by means of an SAP XI interface, through a Z IDoc.
When I create the Account Receivable (and/or Payable) structure, I fill, through the BAdI, the BKPF-XMWST (Calculate tax automatically) and BSEG-MWSKZ (Tax code) fields. However, even the resulting posted document does have the Tax Information fields completed (the ones in the BSET table), the BAPI doesn't create the tax position automatically (just like the FB01 or FB60 transactions do). Note that the amounts are sent in their gross value by the interface (that's why the debit and credit sides remain consistent and the document is posted correctly).
How can I have that position created? Is there a function module which I can call or something?
Thanks a lot in advance.