As per RBI guidelines, post 30th June 2022 - Aggregators or Merchants cannot save customers card details until customer provides the consent for the same. Validating your card is a consent through which security on your card will be enhanced and you can continue using saved card...
Yes, Tokenization is introduced and recommended by RBI in order to enhance security on customers card.
There is no limit on saved cards - User can save and validate as many cards they want.
If the card is not validated, you won’t be able to continue using a particular saved card with Freecharge. You will need to go through hassle of re-entering your complete card details when doing transaction on Freecharge.
No charges - There are no charges to tokenize your card.