# Welcome to Cortena

What Cortena does, how agents fit in, and where to start.

Cortena is the AI operator for accounts payable. It captures invoices, codes lines, and prepares booking-ready journals for the accounting system you already use.

You stay in control: agents propose, you approve.

![Invoice processing flow from capture to export](https://help.cortena.ai/assets/img/help/flows/processing-flow.png)

## Where to begin

1. Connect your ledger (DATEV, Exact Online, Twinfield, or Agicap).
2. Invite your team and set roles.
3. Process a first batch and correct a few lines so agents learn your patterns.

## What success looks like

After a short learning period, most invoices move through with light review. Live customers typically reach around 90% auto-coded within weeks.