Invoice stuck in AR interface

Hi,

One of the users applied a huge manual discount to a sales order line. This resulted the line to have a negative unit selling price.

The line got processed and closed successfully. However, it got stuck in AR interface with error and is not getting imported. Reason being invoices cannot have negative value. The invoice gets created if we update the value to a positive number.

Can you please advise the best workaround for this issue? The sales order line is already progressed. If we make the amount positive in AR interface, the invoice will get created but this will lead to amount inconsistencies between OM and AR.