[Solved] What is the likely cause of this 400 Bad Request error in a REST API?PUT /api/profile HTTP/1.1 Content-Type: application/json {"email": "user@example.com", "age": -5} | Rest API

Rest API - HTTP Status Codes

What is the likely cause of this 400 Bad Request error in a REST API?

PUT /api/profile HTTP/1.1
Content-Type: application/json

{"email": "user@example.com", "age": -5}

AMissing Content-Type header

BNegative age value is invalid

CIncorrect HTTP method for update

DEmail format is incorrect

Step-by-Step Solution

Solution:

Step 1: Check the JSON data
The age field has a negative value (-5), which is usually invalid.
Step 2: Understand validation rules
API likely rejects negative age as invalid input, causing 400 Bad Request.
Final Answer:
Negative age value is invalid -> Option B
Quick Check:
Invalid field values cause 400 Bad Request [OK]

Quick Trick: Invalid field values trigger 400 Bad Request [OK]

Common Mistakes:

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