Common HTTP errors seen with our API


HTTP Status Code Reason Action
400 Bad Request Invalid/Malformed request body or more than 50,000 messages in request.  We may be sending more data back take a look at for full details
401 Not Authorised No authentication header provided. Check that you are sending all three pieces of data needed to us; username, password and account reference, you can confirm these details at our portal at
402 Payment Required Not enough message credits. Give your account manager a ring on 03453565758 to extend your credit or make a purchase
403 Forbidden Failed authentication or not authorised to access feature. You can reset the password within our portal at

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