> ## 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.

# Error Codes Overview

> Common BlockDB error categories and where to find specific codes.

<CardGroup>
  <Card title="API Errors" icon="terminal" href="/troubleshooting/error-codes/api/home">
    HTTP statuses and structured error responses from REST endpoints.
  </Card>

  <Card title="WSS Errors" icon="wireless" href="/troubleshooting/error-codes/wss/home">
    WebSocket close codes and connection diagnostics.
  </Card>

  <Card title="SFTP Errors" icon="server" href="/troubleshooting/error-codes/sftp/home">
    Authentication and transfer failures for archive delivery.
  </Card>
</CardGroup>