[module]Google Merchant Center gtin error?!?!?!?!

[nmarino]

I'm trying to get my Google Merchant Center module to send the data feed, but keep getting a warning error saying I don't have the gtin listed. I do have the manufacturer, reference, supplier, supplier reference all listed, but that doesn't seem to be enough. I guess Google now requires the UPC as well, but I'm a parts dealer for numerous manufacturers and have literally hundreds if not thousands of parts I plan to input as I get time. How do I get past this error so my parts can be found in Google Shopping (not the PS module, but the actual Google Shopping)? Can/should I just enter a made up 12 digit number in the UPC block to "trick" the system? Would that even work? I need to find a solution to this. The module is super easy to use and seems to work great up to this point, but if I can't get past this road block then I wasted the money for nothing.