| Code | Meaning | Implemented |
|---|---|---|
| -6 | Failed to connect to DNS | Y |
| -5 | Failed to connect to server | Y |
| -4 | Invalid domain | Y |
| -3 | Invalid filename / No file found | Y |
| -2 | Server-side error | Y |
| -1 | Unknown / Custom error | Y |
| 0 | Successfully loaded the document | Y |
| 1 | Awaiting response | N (v2 planned) |
| 2 | Streaming document | N (v2 planned) |
| 3 | Login required | N (v2 planned) |
| 4 | Open SPBA account service | N (v2 planned) |
| 5 | Unknown / Custom message | Y |
| 6 | Download instead of displaying | N (v2 planned) |
| 7 | Redirect | N (v2 planned) |