Error specifying bollo-relevant tax code

What causes this issue?

The checked items to which Bollo applies contain value-added-tax codes
that contain differing codes for debiting Bollo to business partners.
Customizing for account determination may have been set up to assign
VAT codes in Bollo-relevant postings for private or public customers in
such a way that, for the same same customer, both the customer and the
company are debited.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Make sure that the code for debiting the tax is set correctly in the
<ZH>TFK007B</> table (tax codes for Bollo (Italy)).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.