Additional Client Errors in HTTP
From the HTTP Status Codes cheat sheet · 4xx Client Errors · verified Jul 2026
Additional Client Errors
Other important client error codes
javascript
406 : Not Acceptable - Content negotiation failed
408 : Request Timeout - Request took too long
410 : Gone - Resource permanently deleted
413 : Content Too Large - Request body exceeds limit
422 : Unprocessable Content - Semantic validation errors
429 : Too Many Requests - Rate limit exceeded⚡ 429 for rate limiting (include Retry-After header)
💡 422 vs 400: semantic vs syntactic errors
📌 410 vs 404: permanent vs unknown deletion
🔴 413 for file upload size limits
Continue with HTTP Status Codes
Save the full cheat sheet or work through every related task.