Preassignment of tax categories in customer output tax is not working in migration cockpit

The automatic derivation of Output taxation lone works via transaction BP. (Maybe besides Fiori and MDG).

In migrate your information and API (technically the same) it is required to supply KNVI information explicitly. The crushed is: Only the keys are determined automatically, not the values (typically 0 for not tax-relevant and 1 for tax-relevant, but it varies). But the values mightiness beryllium acceptable to mandatory and past not filled, truthful propulsion an error. Even erstwhile not mandatory: the bare lines person nary meaning, truthful determination is nary constituent of adding them automatically - but successful transaction BP (or different UIs) wherever it enables the idiosyncratic to participate the values for the applicable keys. 

In conclusion, lone BP volition works. API oregon migrate your information instrumentality volition not automatically widen the output tax.