How do I make a payment request safe to retry?
Send an Idempotency-Key header with a unique value on the POST; repeated requests with the same key return the original response for 24 hours 1. Keys are scoped to your API key and endpoint 2.
Idempotent requests
API reference · Requests
Provide an Idempotency-Key header to safely retry a request.
Authentication
API reference · Keys