When Update Payment Method API is invoked, it returns a hosted page URL. When the customers are directed to this URL, they will be able to change/update their payment methods.

Note: If you're using Checkout V3, use Manage Payment Sources API to request your customers to update their payment method details or change their payment method.

Using this API, you can request your customers to update their payment method details or change their payment method. This is used in scenarios like customers updating their payment methods before the end of trial or customers switching among payment methods.

If you are a PC 1.0 user, then click here to know more. 

If you are a PC 2.0 user, then click here to know more.