Trying To Approve Purchase Order (PO) - Error Messages: Unexpected Error Occured During Tax Calculat

Hi Team,

 we are getting the below mentioned error while approving the PO.

Trying To Approve Purchase Order (PO) - Error Messages: Unexpected Error Occured During Tax Calculation Exception: 023 - po.plsql.PO_TAX_INTERFACE_PVT.CALCUATE_TAX #80 ORA-01400: cannot insert NULL into (ZA","ZX"_TRANSACTUIB_LINES_GT","LINE_AMT")

While checking the Metalink we found the note id 1306772.1

where it states that if PO line is billed then we should not update the Price override directly.

Can you please tell us how to provide the data fix for this issue if one of the PO line is without Price override and it was billed.