# Error Codes

| Name        | Code | Description |
| :---        | :--- | :---        |
| NoAdFound   | 0    | No Ad was returned to the Helium SDK to be shown. Confirm that you are using the correct App ID and App Signature, a correct placement value that’s already been setup in your Helium Dashboard. |
| NoBid       | 1    | No Ad was returned to the Helium SDK to be shown due to no qualifying bids received from valid ad sources.     |
| NoNetwork   | 2    | The Helium SDK was unable to establish an internet connection. Check your device’s connectivity and try again. |
| ServerError | 3    | There was an internal error in the Helium servers that prevented this call from completing successfully.       |
| Unknown     | 4    | An uncategorized error has occurred. |