No suitable posting to cash flow acct found for withhold.tax adjustment

What causes this issue?

A down payment was posted to a vendor for whom withholding tax is be to
paid. The bank posting should be automatically reduced by the system by
the withholding tax amount determined. However, no line item was
entered with a sufficient amount to an account which is characterized
as "cash flow relevant".

How to fix this error?

Check whether you posted to the correct bank account. If yes, check
whether the account is set as "cash flow relevant" in the master
record. If necessary, select the indicator in the master record and
then enter the doucment again.

Error message extract from SAP system. Copyright SAP SE.