X-NSCP-WCAP-ERRNO:1 - Session ID timed out or Invalid session ID
X-NSCP-WCAP-ERRNO:28 - Command failed. The system denies access to the calendar
X-NSCP-WCAP-ERRNO:29 - Command failed. The calendar does not exist in the database
X-NSCP-WCAP-ERRNO:55 - Get Server time Failed