The expected response times, or the response time limits for each operation, are defined below.
- **OAuth Client Credentials** – 15 seconds.
- **Custom Operations** – 10 seconds.
- **Payment** – 30 seconds.
- **Payment Status** – 15 seconds.
- **Cancel Payment** – 15 seconds.
- **Send Payment Info** – 60 seconds.

If the service-provider does not return an answer within the given time frame per operation, it is assumed that the request has failed.