Payment Methods API endpoint now generally available in v2021-11
All stores are now able to use the payment method endpoint, regardless of whether they’re using Multiple Payment Method or Single Payment Method. The payment methods API endpoint is also available for all platforms.
The payment methods endpoint effectively replaces the 2021-01 customers_payment_source endpoint. Use this new endpoint to get a customer's payment method(s), add new ones, or update existing.
Note: Although the endpoint is available for merchants using the Shopify Checkout Integration and migrated stores, if a payment method is stored on Shopify, the endpoint is Read-Only. This is a Shopify limitation that we’re not able to add or update payment methods stored on their end. To be able to access the endpoint, the merchant will need to make sure their tokens are configured correctly with the “Payment Method” permission set to “Read access” or “Read and write access”.
To learn more, visit our API reference documentation here.