HTTP 413 Content Too Large vs 506 Variant Also Negotiates
HTTP 413 (Content Too Large) is a 4xx Client Error response, while 506 (Variant Also Negotiates) is a 5xx Server Error response. 413 indicates that the request payload exceeds the server's size limit. In contrast, 506 means that the server has an internal configuration error: the chosen variant resource is configured to engage in content negotiation itself.
Description
The request payload exceeds the server's size limit.
When You See It
When uploading files that exceed the server's maximum upload size.
How to Fix
Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody).
Description
The server has an internal configuration error: the chosen variant resource is configured to engage in content negotiation itself.
When You See It
Rare. Indicates a misconfigured server-side content negotiation loop.
How to Fix
Fix the server's content negotiation configuration.
Key Differences
413 is a 4xx Client Error response, while 506 is a 5xx Server Error response.
HTTP 413: The request payload exceeds the server's size limit.
HTTP 506: The server has an internal configuration error: the chosen variant resource is configured to engage in content negotiation itself.
You encounter 413 when when uploading files that exceed the server's maximum upload size.
You encounter 506 when rare. Indicates a misconfigured server-side content negotiation loop.
When to Use Which
For 413 (Content Too Large): Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody). For 506 (Variant Also Negotiates): Fix the server's content negotiation configuration.