MSIR.0172 SYBMSG(119,15,1) Must pass parameter number (num) and subsequent parameters as '@name = value'.
This message indicates that there was an attempt to pass a positional parameter after a named parameter in an EXEC statement in a stream being handled by EXEC2RPC processing on a Janus Open Server port. This is indicative of an error in the client code. Turning on language/RPC debugging with a "JANUS TRACE 3" command and re-running the request will send the data being sent by the client to the Model 204 audit trail.