Tax code & requires & as the account key

What causes this issue?

A tax code and an account key are determined from the SD pricing
procedure for the tax condition.
However, this account key is not active in the customizing setting for
this tax code.

System Response

Posting could be to the wrong account.

How to fix this error?

You should check the determination of the tax code if the SD pricing
procedure delivers an incorrect tax code. If the correct tax code is
determined, you should adjust the customizing settings of the tax code
(FXTP) to match the settings in the pricing procedure for the tax
condition.

Error message extract from SAP system. Copyright SAP SE.