HTTP 203 Non-Authoritative Information vs 300 Multiple Choices
HTTP 203 (Non-Authoritative Information) is a 2xx Success response, while 300 (Multiple Choices) is a 3xx Redirection response. 203 indicates that the response payload has been modified by a transforming proxy from the origin server's 200 response. In contrast, 300 means that the request has more than one possible response. The client should choose one of them.
Description
The response payload has been modified by a transforming proxy from the origin server's 200 response.
When You See It
When a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
How to Fix
Check if a proxy is modifying the response. Access the origin directly if you need the original content.
Description
The request has more than one possible response. The client should choose one of them.
When You See It
When a resource is available in multiple formats (e.g., different languages or media types).
How to Fix
Select the appropriate resource variant. Send an Accept header with your preferred content type.
Key Differences
203 is a 2xx Success response, while 300 is a 3xx Redirection response.
HTTP 203: The response payload has been modified by a transforming proxy from the origin server's 200 response.
HTTP 300: The request has more than one possible response. The client should choose one of them.
You encounter 203 when when a proxy or CDN modifies the response body (e.g., adds headers, transforms content).
You encounter 300 when when a resource is available in multiple formats (e.g., different languages or media types).
When to Use Which
For 203 (Non-Authoritative Information): Check if a proxy is modifying the response. Access the origin directly if you need the original content. For 300 (Multiple Choices): Select the appropriate resource variant. Send an Accept header with your preferred content type.