Can't revise items. Get UPC Error message.

[humbleandkindgifts]

Hi!

For the past three days anytime that I try to revise an of my items I get an error message.

"It looks like there's a problem with this listing.

• UPC - The UPC field is missing. Please add UPC to the listing and try again."

All of these items have been on for months (I have multples of each) and never had a UPC code. I had to manually insert the option for a UPC code, and then entered the 12 digit code. I still receive the error message. What can I do to fix this ASAP? Thanks so much! 

[paudoh-16]

If I were you, I'd delete it and start again. Can't think of any other way of getting out of that trap.