At some point, while using our API, you may fail to access the data from your 123 Form Builder account. It’s best that you understand from the very beginning the cause of these errors. Therefore, here is a complete list of all the API responses you’d receive, with explanations attached.
In XML and JSON, the API error messages appear as tags (<errorMessage>), respectively names/keys (message).
And here is the confirmation message that you will receive when your webhook is added successfully.