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?
Is it safe to validate the saved cards?
What will happen if I do not validate my saved cards?
My money got deducted while validating the card. What should I do?
How do I complete the process of Tokenization?
I am not ok to give consent to save my card details
I am unable to see my saved card details in my app
What are the charges for availing this service?
Are the saved card details safe after availing this?
Is it mandatory for all the users to Tokenize?
How many cards can a user validate?
There is no limit on saved cards - User can save and validate as many cards they want.