Despite their error, it is still our duty as developers (especially RESTful API developers) to give the client an informative message describing what went wrong. The most common 400-class response ...

Common HTTP status code errors in REST API testing include: 400 Bad Request: Indicates that the request sent by the client is invalid. 401 Unauthorized: Shows that the client needs to authenticate ...

Learn how to use HTTP status codes effectively to communicate the result of each request, provide useful feedback, and follow the HTTP protocol and best practices in your RESTful API design.

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204: “Done, and no body.” Generally, your DELETEs return this code. 400: “Client sent me junk, and I’m not going to mess with it.” 401: “Unauthorized, the client should authenticate ...

Instant REST API Response as JSON (source: Curl Site). Curl functionality can also be found in the REST Client extension offering on the VS Code Marketplace, where one of the tool's features is listed ...