Status Codes
When you call any of the NDM Contraction Hierarchies API endpoints, the Response header returns one of the standard HTTP status codes defined in the following table:
| HTTP Status Code | Description |
|---|---|
200 OK |
The request was successfully completed. A 200 status is returned for a successful GET or POST method. |
400 Bad Request |
The request could not be processed because it contains missing or invalid information (such as, a validation error on an input field, a missing required value, and so on). |
404 Not Found |
The request includes a resource URI that does not exist. |
500 Internal Server Error |
The server encountered an unexpected condition that prevented it from fulfilling the request. |