[Solved] A developer writes this response:HTTP/1.1 429 Too Many Requests Retry-After: -10What is wrong with this Retry-After value? | Rest API

Rest API - Error Handling

A developer writes this response:

HTTP/1.1 429 Too Many Requests
Retry-After: -10

What is wrong with this Retry-After value?

ANegative values are invalid for Retry-After

BRetry-After should be a string, not a number

CRetry-After header is missing

DStatus code should be 503 instead

Step-by-Step Solution

Solution:

Step 1: Understand valid Retry-After values
Retry-After must be a positive integer or a valid HTTP date.
Step 2: Identify the problem with negative value
Negative values like -10 are invalid and do not make sense for wait time.
Final Answer:
Negative values are invalid for Retry-After -> Option A
Quick Check:
Retry-After must be positive or date, negative invalid [OK]

Quick Trick: Retry-After cannot be negative [OK]

Common Mistakes:

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A developer writes this response: