What are RESTful conventions for HTTP status codes and error handling?

• 2xx Success → 200 (OK), 201 (Created).
• 4xx Client Errors → 400 (Bad Request), 401 (Unauthorized), 404 (Not Found).
• 5xx Server Errors → 500 (Internal Server Error), 503 (Service Unavailable).
• Error responses should include structured messages:

{

"status": 400,

"error": "Invalid Data",

"details": "Email is required"

}