Diagnosis
Purely batch input error message: A country and tax categorycombination which is not defined was transferred.

Procedure
Exactly those indicators for the following country/tax categorycombinations may/must be maintained or transferred:
1. Sales organization company code country
2. Sales organization plant countries
3. All tax categories allowed for the countries from 1 + 2 (withincustomizing, select Sales and Distribution -> Basic functions -> Taxdetermination -> Define tax determination rules and then from hereselect Tax categories per country.