What is the meaning of the 405 response code?

The 405 response code is defined as "Method Not Allowed". This indicates that the server understands the request method (such as GET, POST, PUT, DELETE, etc.) that the client is attempting to use, but that method is not permitted for the resource at the requested URL. For instance, if a client attempts to use the POST method to submit data to a resource that is configured only to accept GET requests, the server will respond with a 405 status code, informing the client that the specified method is not allowed for the resource they are trying to access.

This status code is crucial for guiding developers in using the correct HTTP methods when making requests to a server, ensuring that they follow the API specifications or server capabilities. Understanding this response helps developers troubleshoot issues related to method usage in their applications.