lightmy.dayINSTANT ANSWERS

Client error

HTTP 415: Unsupported Media Type

HTTP 415 means the server does not support the request media type.

Meaning

The request body format or Content-Type is not accepted for this resource.

Common causes

Sending XML to a JSON endpoint, missing Content-Type, or unsupported file formats can cause it.

What to check

Set the correct Content-Type and send a body format the endpoint accepts.

Example response

HTTP/1.1 415 Unsupported Media Type

References

Registry: IANA HTTP Status Code Registry
Spec: RFC 9110 §15.5.16
Guide: MDN 415 Unsupported Media Type

Related HTTP status codes

Nearby codes often answer the next debugging question.

400 Bad RequestHTTP 400 means the server could not understand the request.405 Method Not AllowedHTTP 405 means the URL exists but does not allow that HTTP method.422 Unprocessable ContentHTTP 422 means the request syntax is valid but the content cannot be processed.