What does HTTP 413 mean?
The request body is larger than the server allows.
Common causes and when you see it
Uploading a file beyond the configured limit.
How to fix or handle it
Reduce the payload or raise limits such as client_max_body_size and post_max_size.
Test it yourself
Send a request with the online API tester, inspect the response with the HTTP header checker, or host an endpoint that returns 413 with the mock API generator to see how your app reacts.
HTTP 413 questions
The request body is larger than the server allows.
Uploading a file beyond the configured limit.
Reduce the payload or raise limits such as client_max_body_size and post_max_size.