I will preface this with the fact that I'm a novice with both GP and eConnect.
Our software already uses eConnect to upload both PO and NON-PO invoices into GP.
We have a new requirement to include both the VAT and VAT Rate with the invoice so that they go whereever the proper place is in GP for that invoice.
Any pointers on how to go about it or where to look for more detailed info would be appreciated.