Here are some errors you might receive and how to avoid them:
"Invalid UPC" – UPC numbers are 12 or 13 digits. Shorter or longer numbers, or letters and punctuation instead of numbers, are not valid.
"UPC not found" – We're verifying all entries using a third-party database. Even if you enter your UPC correctly, there's a chance that the product isn't in this database. If you're certain you've got the numbers right, you can add the product yourself here.
"This field is required." – We want to credit your finds, so please let us know your email address. We're not going to send you anything unless you tell us to.
My UPC is only 8 digits! – Manfacturers sometimes condense UPCs to 8 digits on small products, look up the 8 digit version here and enter the full version above.
Still have problems? Let us know.