Hi,
The tax calculation is always at item level and the header condition will be distributed to items
. You can follow the procedure below:
1. Maintain acruel flag for the discount condition type in M/06
2. Maintain the acruel key against the discount condition type in pricing procedure in M/08
3. Maintain the different GL for the discount acrual in OBYC.
4. Create PO.
5. Maintain the discount amount in header. - It will be distributed at item level, but the tax base wont be altered, because the discount is maintained as acruel condition.
6. Enter the same tax code for all the items (16% tax code) and check the tax calculation.
Regards,
AKPT