BAPI_ACC_DOCUMENT_POST - 1 tax code, 2 lines: how to manipulate?

Question

In our company code, we have a tax code, that has 2 tax percent.rates:
Goods/services tax   VST        7,000           160    100       GST
Provincial Sales Tax VST        8,025           170    100       PST
These have to be calculated on the same base amount.
E.g.
Payable line item:
amount:  1890
G/L line item:
amount:  1260,59
Tax line item 1:
amount:  115.02  (=7%)(base amount = 1260,59)
Tax line item 2:
amount:  361.45 (=8%)(base amount = 1260,59)
This has to create 2 lines in the BSET table!
When we create an invoice online (fb60), this works perfectly. When I do it via the BAPI ACC_DOCUMENT_POST it's only one line item!
The BAPI somewhat counts up the tax two amounts that I give up in the BAPI (7% amount and 8% amount are counted togehter), only one line is created.
What it needs to do is create two line items for this tax code, with on each line item: the same base amount, the respectively percentage and calculated amount
Anyone any idea how I can manipulate this somehow?
BSET table:
Invoice created online (ideal situation):
  line item 1, Base amount: 1643.12, Tax amount: 115.02
  line item 2, base amount: 1643.12, tax amount: 131.86
Invoice created via BAPI (wrong situation):
  line item 1, Base amount: 3286.24, Tax amount: 246.88
  (3286.24 = 1643.12 x 2, 246.88 = 115.02 + 131.86)
Thanks!

Answer 1

Hi,
RFBIBL00 program can be used as standard ABAP report program which reads the external file (eg .TXT). But format of TXT file is bit tricky. (see below)
This Report will convert the data and will generate a Batch Session which you have to execute using TCode sm35.
File format ..
Row 0: Value "0"
Row 1: Header (Choose the desired columns from BBKPF structure)
Row 2: Detail line item 1 (Choose the desired columns from BBSEG structure)
Row 3: Detail Tax Item 1(Choose the desired columns from BBSEG structure)
and so on repeating the header and detail/tax line item for each invoice (Row 1, 2, 3). Note Row 0 will appear only once.
Hope this helps your TAX update
Regards,
Rohit