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

# Invoice integration patterns

> Common patterns for integrating invoice processing with comstruct

## Overview

comstruct provides flexible invoice processing that supports several integration patterns. This guide covers the most common scenarios and best practices.

## Integration patterns

<CardGroup cols={2}>
  <Card title="Direct upload" icon="upload">
    Suppliers upload invoices directly for AI-assisted processing.
  </Card>

  <Card title="Email forwarding" icon="envelope">
    Invoices received by email are forwarded to comstruct.
  </Card>

  <Card title="ERP export" icon="database">
    Processed invoices are exported to ERP systems for posting.
  </Card>

  <Card title="SAP sync" icon="rotate">
    Two-way sync with SAP for invoice status updates.
  </Card>
</CardGroup>

For full details, code examples, and curl samples, see the German version of this guide or contact [support@comstruct.com](mailto:support@comstruct.com).