Transaction key & & chart of accts & not defined in table &

What causes this issue?

No tax account has been defined for this tax code for the specified
account key in the chart of accounts.

How to fix this error?

Maintain the accounts to which a tax posting is to be made using the
tax code entered. You find this within "Financial Accounting" under
"Financial accounting global settings", "Tax on sales/purchases" and
"Posting" if you select the corresponding transaction key.
<DS:TRAN.OB40>Proceed</>

Error message extract from SAP system. Copyright SAP SE.