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Overview

If your Cardcore integration includes webhook events, configure a secure HTTPS endpoint that can receive and process callbacks.
  • Use an HTTPS endpoint
  • Validate incoming requests
  • Log delivery failures
  • Retry safely in your own system when processing fails

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Next step

When your webhook receives a Postbridge authorization callback, your server must return a synchronous ISO-style response payload to indicate whether the transaction is approved or declined. See Postbridge webhook responses for the required response shape and supported response codes. Confirm the exact webhook event set and signature requirements with your Cardcore team.