I’m doing some tests via web version and after sending a message I have received a 453 status, althought it seems that the message was succesfully sent (code 200). I have been sending other messages where the ordertype was different and they run fine. Does anybody know what this status code means?
453 status codes are normally related to email, which I suspect isn’t the case here. So it looks like this status code is specific to your API response, so it should be a case of reviewing the API documentation or discussing with the developer.