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Note

You may pass any value in the transaction_id attribute to trigger a response, and this call will not impact any established transaction. Should you use a live transaction_id, the transaction will not change statuses. Should Proof receive any errors when calling back to your system, Proof will echo them back.

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We have updated our webhook endpoints!

Please refer to our Webhooks V2 Endpoints for new implementations. This endpoint is only available with Webhooks V1, which has been deprecated.