Customers now have a source field that accepts a source or card, and updates related event typesBreaking changes
What’s new
Replaces the cards and default_ properties on the Customer object with sources and default_. Both properties can represent Card objects, as before, and Source objects with an object value of card. Older API versions return both the new and old properties on Customer. Replaces the customer. and customer. events with customer..
Impact
Lets you work with a more flexible and comprehensive representation of payment methods for customers