Status Code Usage

Status Code are integral part of HTTP as well as REST API and should be used to differentiate different responses. These should be used by clients according to explanation.

Most of the explanation on status code is provided in link below:

Status Code Check

Mozilla

In many cases REST based frameworks tend to handle status codes.

Some status code to be considered are:

• 200 for generic successful response.
• 201 for creation of resources. Usually with POST request.
• 204 for successful request processing but no response content required.
  • Usually with DELETE and PATCH PUT request. HEAD can be another method where this can be used.

• 400 generic client issues.
• 401 usually authentication and authorization issues.
• 403 usually permission issues. We should differentiate our response between 401 and 403
  • 401 there is no authorization
  • 403 there is authentication but no permission.
• 404 the resource that client wanted is Not Found.
• 405 the HTTP request method is not allowed.