Starting with Shopify Admin GraphQL API version 2026-07, the payment method identifier field becomes required when using the customerPaymentMethodRemoteCreate mutation with Stripe, Authorize.net, or Braintree inputs. Previously optional at the schema level, these fields were already required at runtime for payment processing to work. Developers who already pass a payment method identifier need no changes; those who don't must update their integration before adopting the new API version.
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