If the server (DTR) does not recognize the request or cannot fulfill it, it responds with an error message. The error message has the following keys:
- *Error : integer, error code 0x00000000 : Unknown request
- *Error : integer, error code 0x00000001 : Invalid request (request recognized, invalid request data)
- *Error : integer, error code 0x00000002 : No sensor (sensor(s) not connected to DTR)
- ErrorMsg : string, error details
There may also be error-dependent extra keys. Other error codes may be returned. 0x00000003 is to be handled as unknown request. Codes with higher numbers refer to internal errors; contact Vaisala for more information on these.