SAP Message >0438 - Incorrect +/- sign for posting amount or tax base

Diagnosis
In item &V1&, there is a discrepancy between the posting amount (taxamount), tax base amount, and tax percentage rate.
If the tax percentage rate is positive (standard), both amounts musthave the same + or - sign.
If the tax percentage rate is negative, the amounts must have different+ or - signs.

System Response
Error message: The document cannot be posted.

Procedure
Note the error number and inform your system administration. There isan error in the application program that you cannot rectify.

Procedure for System Administration
INCLUDE FICA_NA_OSS OBJECT DOKU ID TX