Testinvite uses HTTP error codes to indicate success or failure of an API request. Codes in the 2xx range indicate success, 4xx range indicate an error because of the information provided, and 5xx range indicate an error With Testinvite's servers.
Http Codes:
200 | OK |
400 | Bad Request |
401 | Unauthorized |
403 | Forbidden |
404 | Not Found |
5xx | Server Error |
Explanations and possible causes.