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UNKNOWN

ActiveHTTP 500

An unknown error occurred. UNKNOWN is returned when the server throws an unexpected exception that doesn't map to a specific gRPC status code, or when a legacy non-gRPC service returns an error.

Description

UNKNOWN is the catch-all error status. It is returned when the error cause is not known, when a server returns a non-gRPC error, or when a client receives an error from a server that doesn't speak gRPC.

Common causes

  • Unhandled server exception
  • Non-gRPC backend error
  • Malformed response

HTTP equivalent

HTTP 500 – View status code reference →