> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blockdb.io/llms.txt
> Use this file to discover all available pages before exploring further.

# SFTP Error Codes

> Authentication and transfer diagnostics for archive delivery via SFTP.

### Common SFTP Failures

| Symptom              | Likely Cause                           | Action                                      |
| -------------------- | -------------------------------------- | ------------------------------------------- |
| Permission denied    | Key mismatched or user not provisioned | Upload correct public key; confirm username |
| Connection timed out | Firewall or wrong host/port            | Allowlist host; verify port 22              |
| No such file         | Path incorrect or share not ready      | Confirm dataset path and provisioning       |
| Transfer stalls      | Network throttling                     | Resume or use smaller chunk size            |

<Note>
  Provide your username, target path, file name, and approximate timestamp when reporting SFTP issues.
</Note>