SAP Message >0367 - Formal error: Identification as tax line item is not unique

Diagnosis
In line item &V1&, both the sales tax code &V2& and other tax code
&V3& have been set. The tax type indicator must be unique.

System Response
Error message. The document cannot be posted.
INCLUDE NA_SYSADMIN1 OBJECT DOKU ID TX

Procedure for System Administration
INCLUDE FICA_NA_OSS OBJECT DOKU ID TX