Will there be problems on the provider's side with retries between the payment service and the payment provider?

Retries between the payment service and the payment provider can lead to several issues on the provider's side:

• Duplicate transactions. If a retry occurs due to a timeout or network error, the provider may receive multiple identical payment requests, leading to double charges.
• Load on the provider. Frequent retries increase the number of requests, which can affect the provider's service performance and stability.
• Data consistency. If the provider does not implement idempotency, retries can compromise data integrity.

To avoid problems, idempotent operations are usually implemented on the provider's side, and exponential backoff with a limit on the number of attempts is used.