SAP Note 16159 - Invoice verification: no tax account determined

Symptom:

Key word: MR01
When you create an invoice for an account-assigned purchase order, the input VAT ID entered is not taken into account. No posting is made to the corresponding tax account. A balance is created in the amount of the tax amount.

Cause and prerequisites

Incorrect configuration of the G/L account of the account-assigned order item. The tax category is initial.

Solution
Change the G/L account. On the "Accounts management for company code" screen, enter a usable value in the "Account control" area, such as "- ".C