What is a UPC or EAN?
Short answer
A UPC (or EAN) is the barcode number of a whole release. There's nothing to enter: your release gets its UPC when it goes out to the stores.
- A UPC has 12 digits and an EAN has 13. Both name a whole release, not a single track.
- Moving a release with the UPC it already has, from another distributor, comes later, with a guided catalog move.
- Once a release is out, its UPC stays as it is.