API Errors and HTTP Status Code Details

The VAS Developer API uses conventional HTTP response codes to indicate the success or failure of an API request. In general, status codes in the 2xx range indicate success, and codes in the 4xx range indicate an error. 5xx error codes are rare and indicate a server error.

Reference the following for more information on potential status codes or errors: 

Status Code/Error Description
200 OK

Standard response for a successful HTTP request.

201 Created

A method successfully created a resource.
202 Accepted

The server accepted the request and will execute it at a later point.

204 No Content

The server successfully executed the method but returns no response body.
400 Bad Request

Bad request. Depending on the endpoint, additional error details may be sent in the response.

Use the strategies below to troubleshoot the error: 

  • Check the request for any typos.
  • Check the syntax of the request and verify the parameters provided fall within the expected range.
  • For POST endpoints, verify that the request adheres to the logic of the VAS Developer API:  
    • Events may only be added to an animal's current lactation.
    • Events cannot be added to animals in a sold/died status.
NOTE: The resource URI is case-sensitive. If you are encountering unexpected 400 errors, check your URI for correct capitalization of resource names.
401 Unauthorized

Authentication failed due to invalid authentication credentials.
403 Forbidden

You are not permitted to access this resource.
404 Not Found

The resource could not be found. It is possible that the resource has been moved or deleted, or that there is a typo in your request.
405 Method Not Allowed

The requested method and resource are not compatible.

423 Locked The dairy is temporarily locked due to a database reload. This error will continue until the process completes, usually within an hour, depending on the herd size and server traffic.
429 Limit Exceeded

You exceeded the number of requests you can make per day.
429 Too Many Requests

You exceeded the number of requests you can make per second.

500 Internal Server Error

A VAS server error has occurred and the request cannot be fulfilled.
502 Bad Gateway

The server did not receive a timely response from another server.

503 Service Unavailable

The server is not available, usually due to overloading or maintenance issues.

504 Gateway Timeout

The server, while acting as a gateway or proxy, cannot get a response in time.

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