| UCS_CMD_RET_SUCCESS | Operation successfully completed  | 
| UCS_CMD_RET_ERR_MSGID_NOTAVAIL | MessageId not found  | 
| UCS_CMD_RET_ERR_TX_BUSY | No free Tx buffer available  | 
| UCS_CMD_RET_ERR_APPL | Application handler function reports custom error  | 
| UCS_CMD_RET_ERR_ALREADY_ENTERED | MessageId Table already connected  | 
| UCS_CMD_RET_ERR_NULL_PTR | NULL pointer used as argument  |