There is no limit on saved cards - User can save and validate as many cards they want.
Related Question
Why should I validate the saved cards?
I am unable to see my saved card details in my app
Are the saved card details safe after availing this?
What are the Tokenization supported card types?
Is it safe to validate the saved cards?
My money got deducted while validating the card. What should I do?
I am not ok to give consent to save my card details
What are the charges for availing this service?
Will I be able to transact with my saved cards if I do not tokenize my card?
How do I complete the process of Tokenization?
How many cards can a user validate?
There is no limit on saved cards - User can save and validate as many cards they want.