4×× Client Error
415 Unsupported Media Type
The origin server is refusing to service the request because the payload is in a format not supported by this method on the target resource.
The format problem might be due to the request's indicated Content-Type or Content-Encoding, or as a result of inspecting the data directly.
- Source: RFC7231 Section 6.5.13
415 Code References
Rails HTTP Status Symbol
Go HTTP Status Constant