v1.10.37 - Saving a card completes for customers who already have a default card #
Saving a card without a purchase could end in an error for a customer who already had a saved default card, including on the return from 3D Secure authentication. The setup now completes and the card is saved.
21 Oct 2026
Fix
Saving a card without a purchase (a card setup) could end in an error for a customer who already had a saved default card. The error came when the setup finished, for example on the return from 3D Secure authentication, and the new card was not saved.
What changed
- A card setup now completes for a customer who already has a saved default card.
- The default card is chosen as before: a card from a newer setup becomes the default, and a setup that started earlier but finished later is saved without replacing the newer default.
Why it matters
Customers can add another card to their account, and merchants can rely on the setup completing, whether or not a card was already saved.
Developer notes
- No request, response or webhook changes.
- This release contains no breaking changes.