Validation helps to prevent registry fraud, and is also a handy tool if you end
up registering some of your graded cards, and then selling them to someone else
Here's how it works: If you enter a serial number into one of your registries,
the system will validate whether or not that specific card belongs to that registry's
set. If it does, the card will be validated.
However, if you enter a serial number into one of your registries, and that
specific card exists in ANOTHER USER's registry, the software will send an email
to the other user asking him to RELEASE the card from his registry. When he
does, that specific card will then be validated into your registry.