HTTP 415 Unsupported Media Type

The request body format is not supported by the target resource.

Use 415 when Content-Type is missing, invalid, or not accepted by the endpoint.

httpstatus codecontent-typevalidation

Response (http)

HTTP/1.1 415 Unsupported Media Type

Use 415 when Content-Type is missing, invalid, or not accepted by the endpoint.

Common mistakes

Using 415 for semantically invalid content; a well-formed body with bad values means 422.

Registry reference: RFC9110, Section 15.5.16

Sources