Add gtin field when itemcode and barcode field used for other details

Hi,

We are being required to send documents by EDI and in some cases we might need to use the GTIN and UNSPSC with something called an EDI product code.

From my understanding our item code will be the EDI code. But this is where it is odd the barcode field we in the past many years ago made into the UNSPSC field, so when we make an invoice the barcode field shows UNSPSC information. Now the issue is how do we store GTIN information? I was thinking as in most cases it is 12-14 digit number (UPC or EAN) stored on GS1.

I not sure if there is a better way, but thinking of a UDV in the item master data. Then take UDF on a line item such as INV1 with a formatted search to fetch the data based on the item code.