As a takedown is considered a permanent action, unfortunately, we cannot reverse takedowns.
Stores view each release (UPC) as a final product that should only be removed if the rights have been lost and/or there is no intention of selling that product again.
How can I get my music back in stores after it was taken down?
We'd advise to only do this under urgent circumstances, but you can do this by uploading the song again within your account and submitting it as a brand new submission. It would be assigned with a new UPC code, as these cannot be duplicated. However, you can reuse previous ISRCs as long as the audio file and track details are the exact same.