error when publishing listing "MPN has an invalid value of "NO". Enter a valid value and try again"

[j9marill]

I cannot find the MPN field and I cannot figure out how to resolve this. The listing will not publish due to the error message. Appreciate your help! 

[mr_lincoln]

Hi @j9marill 

You may need to use a PC if you are currently doing your work on a smart phone, the listing tool via eBay's Seller Hub > Sell link (upper right hand corner of the Overview page).  On that page you can Create a listing and the MPN is one of numerous Item Specifics on the list.

[disneyshopper]

MPN is Manufacturer's Product Number.  If there isn't one, leave it blank.