Integrate an AP invoice with precalculated tax amount to Oracle Fusion invoice

Hello,

We have a supplier-facing system (non-Oracle) where suppliers enter AP invoice requests. They pre-calculate and enter a tax amount at the invoice header. My goal is to integrate these invoices into the Oracle Fusion AP module for payment processing.

While I am able to create multi-line invoices without any issues, I am encountering difficulties integrating the tax line. I am using the Oracle-delivered API for this purpose. The Line Type is set to "Tax," but Oracle rejects it, stating that the valid values are "Item," "Freight," and "Miscellaneous."

It is worth noting that the Invoice line sheet on the Invoice FBDI lists "Item," "Freight," "Tax," and "Miscellaneous" as valid Line Types.