App and session errors reference

Use this reference to identify HASS Cloud app and session errors by name and apply the recommended action.

Invalid SDF ID

• Type: URL/input validation
• Location: Full page error screen
• Cause: Bad/malformed file ID in URL
• What to do: Open file from app navigation instead of direct bad URL

Error Loading SDF

• Type: File load error
• Location: Full page error card
• Cause: SDF fetch failed
• What to do: Retry; confirm file exists and permissions

Access Denied

• Type: Authorization
• Location: Session error screen
• Cause: User no longer has access to file
• What to do: Request access or return home

File Deleted

• Type: File lifecycle
• Location: Session error screen
• Cause: File removed while trying to open/use it
• What to do: Return home and open another file

All Seats In Use / License In Use

• Type: Licensing/session capacity
• Location: Seat-management panel
• Cause: No available seat/license for new session
• What to do: End another session or wait for seat availability

Connection Error

• Type: Connectivity
• Location: Session error screen
• Cause: Failed to establish session connection
• What to do: Retry connection / check network

You are disconnected

• Type: Live session interruption
• Location: Overlay over editor
• Cause: Session transport dropped during editing
• What to do: Refresh/reconnect session

Session Timed Out

• Type: Inactivity timeout
• Location: Toast + reconnect state
• Cause: Session expired due to inactivity
• What to do: Refresh/rejoin session

Sync Error (diff application error)

• Type: Sync/validation
• Location: Issues panel (diff-application-error)
• Cause: Server rejected or failed applying an edit diff
• What to do: Review issue details, correct offending edit, retry