Why does it say my UPC is not registered?

If you have entered a valid UPC when adding new Music items and get the red UPC Not Registered notification this means one of 3 things:

Your UPC has not yet been registered with SoundScan or is invalid
Your UPC has been registered with SoundScan but it has not yet finished processing
You may have entered the code incorrectly. Be sure you do not add any spaces or additional characters

It can take up to 2 weeks for SoundScan to process a new UPC registration. Once processed, it will be available in atVenu the following day.