Your favourite TCG may introduce new features in their game, such as a new card type or a new rarity. In these instances, you may need to update your product type in order to import the new cards from our catalog.
How to add a new rarity value:
Navigate to the product type tab (Inventory > Types)
Find your product type and click on it
Navigate to the Descriptors section
Find the descriptor you would like to modify
Under the values column, add the new rarity value (hit tab to confirm the changes, you'll see the new rarity turn into a blue button like value)
Finish things off by hitting save.
Please see the gif below for an example of adding the rarity, FR, to the Dragon Ball Super Singles Product Type.