We have the Taxware system set up for computation of tax rates and use the function module RFC_CALCULATE_TAXES_DOC.
This function module takes into consideration ship-to and ship-from tax jurisdiction codes, alongwith other parameters, when returning the appropriate tax rates for an SD invoice.
However, when posting an FI document, it is only possible to input 1 tax jurisdiction code value.
So, while trying to post a direct FI invoice/memo (for a tax adjustment process), the tax rates returned by the module differ from those in the SD invoice.
Is there some way to input the ship-from jurisdiction code while posting an FI document?
If not, how can we work around this issue of receiving different tax codes while posting an SD invoice and an FI invoice for the same customer?