... CoCde &, W/holding tax type &: No numbering class assigned

What causes this issue?

A numbering class has not been assigned to the combination of company
code and withholding tax type.
Withholding tax types exist that are relevant to numbering. The system
cannot determine a certificate number because the Customizing settings
are incomplete.

System Response

Payment cannot be made.

How to fix this error?

Assign a numbering class to the combination of company code and
withholding tax type.

Error message extract from SAP system. Copyright SAP SE.