Require invoice total to equal sum of all lines
Require invoice total to equal sum of all lines check box in the AP Company Parameters form, Invoice Options tab.
Check this box if you want to require that the amount in the Invoice Total field in the transaction’s header be equal to the sum of the transaction’s line totals.
Line total is defined as Gross + Misc Amt + Tax Amt (where Tax Type <> 2) - Ret Amt (in CA/AU).
Do not check this box if the sum of a transaction’s line totals does not have to equal the amount in the Invoice Total field. A warning still displays if the totals do not match, but you can still save the record.