Rest API - HTTP Status Codes
Why is 422 Unprocessable Entity preferred over 400 Bad Request for semantic validation errors in REST APIs?
Why is 422 Unprocessable Entity preferred over 400 Bad Request for semantic validation errors in REST APIs?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Differentiate 422 and 400 meanings
400 Bad Request is a generic client error for malformed syntax, while 422 means the syntax is correct but the content is semantically invalid.Step 2: Understand why 422 is preferred
Using 422 helps clients distinguish between syntax errors and semantic validation errors for better error handling.Final Answer:
Because 422 specifically indicates semantic errors while 400 is generic syntax error -> Option BQuick Check:
422 = semantic error, 400 = syntax error [OK]
Quick Trick: 422 means semantic error; 400 means syntax error [OK]
Common Mistakes:
- Confusing 422 with authentication errors
- Thinking 422 is a server error
- Assuming 422 is faster or performance-related
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