Vendor is subject to withholding tax

What causes this issue?

A withholding tax indicator is entered in the vendor master record and
no exemption of the liability to withholding tax currently exists.

System Response

The liability to withholding tax is drawn to your attention.

How to fix this error?

Check and complete the specifications on withholding tax on the entry
screen.
INCLUDE 'CUSTOMIZED_MESSAGE_INFO' OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.