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

# DATEV

export const OverviewLegend = ({showTitle = true}) => <blockquote>
    {showTitle && <p>
        <strong>Overview legend 🧭</strong>
      </p>}
    <table>
      <thead>
        <tr>
          <th>Column</th>
          <th>Value</th>
          <th>Meaning</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td>Geography</td>
          <td>🇫🇷 FR · 🇧🇪 BE · …</td>
          <td>Countries where the connector is officially supported.</td>
        </tr>
        <tr>
          <td rowSpan={3}>Software type</td>
          <td>SaaS</td>
          <td>Through API.</td>
        </tr>
        <tr>
          <td>On-premise (local agent)</td>
          <td>
            Software running locally — installation of a local agent is
            required.
          </td>
        </tr>
        <tr>
          <td>On-premise (API)</td>
          <td>Software running locally — API available.</td>
        </tr>
        <tr>
          <td rowSpan={2}>Status</td>
          <td>🔵 Live</td>
          <td>Connector is generally available and production-ready.</td>
        </tr>
        <tr>
          <td>🟣 Beta</td>
          <td>
            Connector is in beta — usable in production but may still evolve.
          </td>
        </tr>
        <tr>
          <td>Multi folder</td>
          <td>✅ Yes / ❌ No</td>
          <td>
            Connection to multiple accounting folders at the same time (see{' '}
            <a href="/developer-guides/api-guides/accounting/folders">
              accounting folders guide
            </a>
            ).
          </td>
        </tr>
        <tr>
          <td>Rate limits</td>
          <td>✅ No / ❌ Yes</td>
          <td>Whether the target software sets rate limits on API calls.</td>
        </tr>
        <tr>
          <td rowSpan={3}>API keys</td>
          <td>❎ No</td>
          <td>
            No API keys required (OAuth2 client secret and client ID). No
            requirements to activate the connector — you can create a
            connection.
          </td>
        </tr>
        <tr>
          <td>🔑</td>
          <td>
            Keys are required to activate the connector. Chift cannot act as
            intermediary to obtain them; we can still assist with steps to get
            keys directly from the software provider.
          </td>
        </tr>
        <tr>
          <td>🔑 ☑️ via Chift</td>
          <td>
            Keys are required to activate the connector. You can go through
            Chift to get the keys (intermediary or partnership keys). An
            approval process may still apply, but you do not need to request
            keys from the vendor on your own.
          </td>
        </tr>
        <tr>
          <td rowSpan={3}>Approval / certification process</td>
          <td>⚡ Instant</td>
          <td>
            No keys required, or Chift can encode their keys for you when
            requested. Activation is instantaneous.
          </td>
        </tr>
        <tr>
          <td>🟢 Approval — [Duration]</td>
          <td>
            Approval will be granted. The vendor may require information or app
            configuration in a developer portal before issuing keys.
          </td>
        </tr>
        <tr>
          <td>🟠 Approval — [Duration]</td>
          <td>
            Approval is not guaranteed — often due to integration strategy; the
            vendor may do a deeper assessment (competitors, partnership
            requirements, and similar).
          </td>
        </tr>
        <tr>
          <td rowSpan={2}>Activation time</td>
          <td>⚡ Instant</td>
          <td>
            If no keys are required, or Chift has keys ready to share with you.
          </td>
        </tr>
        <tr>
          <td>Time</td>
          <td>
            Estimated time to get the connector activated in production as a
            result of the approval or certification process (e.g. ⏱️ 2 days, 1
            week).
          </td>
        </tr>
        <tr>
          <td rowSpan={3}>Extra fees — software editor</td>
          <td>❎ No</td>
          <td>No fees charged by the software editor.</td>
        </tr>
        <tr>
          <td>💰 🕹️</td>
          <td>Fees associated with obtaining a testing account.</td>
        </tr>
        <tr>
          <td>💰 🔑</td>
          <td>Fees charged to get API keys.</td>
        </tr>
        <tr>
          <td rowSpan={2}>Extra fees — end user</td>
          <td>❎ No</td>
          <td>The end user does not pay extra to get integrated.</td>
        </tr>
        <tr>
          <td>💰 Yes</td>
          <td>The end user must pay extra to get integrated.</td>
        </tr>
        <tr>
          <td>Comments on costs</td>
          <td>—</td>
          <td>Additional notes on fees or pricing when relevant.</td>
        </tr>
        <tr>
          <td rowSpan={4}>Sandbox account</td>
          <td>✅ via Chift</td>
          <td>Chift can provide you with a sandbox.</td>
        </tr>
        <tr>
          <td>🟠 Only through integrator</td>
          <td>Only the software's integrator can provide a sandbox.</td>
        </tr>
        <tr>
          <td>✅ Self-service</td>
          <td>You can create your own sandbox.</td>
        </tr>
        <tr>
          <td>✅ Trial account</td>
          <td>It is possible to create a trial account.</td>
        </tr>
      </tbody>
    </table>
  </blockquote>;

export const ConnectorCardIframe = ({api = 'accounting', connectors}) => {
  const [theme, setTheme] = React.useState('light');
  React.useEffect(() => {
    const checkTheme = () => {
      const isDark = document.documentElement.classList.contains('dark');
      setTheme(isDark ? 'dark' : 'light');
    };
    checkTheme();
    const observer = new MutationObserver(checkTheme);
    observer.observe(document.documentElement, {
      attributes: true,
      attributeFilter: ['class']
    });
    return () => observer.disconnect();
  }, []);
  const queryParams = new URLSearchParams({
    api,
    theme,
    ...connectors ? {
      connectors
    } : {}
  });
  const iframeUrl = `https://chift-coverage-matrix.s3.eu-west-3.amazonaws.com/connector-card.html?${queryParams.toString()}`;
  return <iframe src={iframeUrl} title={`Chift connector information - ${api}`} style={{
    display: 'block',
    width: '100%',
    height: '480px',
    margin: 0,
    padding: 0,
    border: 'none'
  }} />;
};

export const CoverageIframe = ({api = 'accounting', connectors}) => {
  const [theme, setTheme] = React.useState('light');
  const [isFullscreen, setIsFullscreen] = React.useState(false);
  const [currentIframeUrl, setCurrentIframeUrl] = React.useState(null);
  const iframeRef = React.useRef(null);
  React.useEffect(() => {
    const checkTheme = () => {
      const isDark = document.documentElement.classList.contains('dark');
      setTheme(isDark ? 'dark' : 'light');
    };
    checkTheme();
    const observer = new MutationObserver(checkTheme);
    observer.observe(document.documentElement, {
      attributes: true,
      attributeFilter: ['class']
    });
    return () => observer.disconnect();
  }, []);
  React.useEffect(() => {
    const handleFullscreenChange = () => {
      setIsFullscreen(!!document.fullscreenElement);
    };
    document.addEventListener('fullscreenchange', handleFullscreenChange);
    return () => document.removeEventListener('fullscreenchange', handleFullscreenChange);
  }, []);
  React.useEffect(() => {
    const handleMessage = event => {
      if (!event.origin.includes('chift-coverage-matrix.s3.eu-west-3.amazonaws.com')) return;
      if (event.data?.type === 'urlChange' && event.data?.url) {
        setCurrentIframeUrl(event.data.url);
      }
    };
    window.addEventListener('message', handleMessage);
    return () => window.removeEventListener('message', handleMessage);
  }, []);
  const queryParams = new URLSearchParams({
    api,
    theme,
    ...connectors ? {
      connectors
    } : {}
  });
  const iframeUrl = `https://chift-coverage-matrix.s3.eu-west-3.amazonaws.com/coverage.html?${queryParams.toString()}`;
  const openUrl = currentIframeUrl || iframeUrl;
  const toggleFullscreen = () => {
    if (!document.fullscreenElement) {
      iframeRef.current?.requestFullscreen();
    } else {
      document.exitFullscreen();
    }
  };
  const isDark = theme === 'dark';
  const buttonStyle = {
    display: 'inline-flex',
    alignItems: 'center',
    gap: '8px',
    padding: '4px 12px',
    fontSize: '14px',
    fontWeight: '500',
    color: isDark ? '#d4d4d4' : '#374151',
    backgroundColor: 'transparent',
    border: `1px solid ${isDark ? '#404040' : '#e5e7eb'}`,
    borderRadius: '12px',
    cursor: 'pointer',
    textDecoration: 'none',
    transition: 'all 0.15s ease'
  };
  const hoverBg = isDark ? 'rgba(255,255,255,0.05)' : 'rgba(0,0,0,0.03)';
  const hoverBorder = isDark ? '#525252' : '#d1d5db';
  const defaultBg = 'transparent';
  const defaultBorder = isDark ? '#404040' : '#e5e7eb';
  return <>
  <div style={{
    display: 'flex',
    justifyContent: 'flex-end',
    gap: '12px',
    marginBottom: '8px'
  }}>
    <button onClick={toggleFullscreen} style={buttonStyle} onMouseEnter={e => {
    e.target.style.backgroundColor = hoverBg;
    e.target.style.borderColor = hoverBorder;
  }} onMouseLeave={e => {
    e.target.style.backgroundColor = defaultBg;
    e.target.style.borderColor = defaultBorder;
  }}>
      <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
        {isFullscreen ? <>
            <polyline points="4 14 10 14 10 20"></polyline>
            <polyline points="20 10 14 10 14 4"></polyline>
            <line x1="14" y1="10" x2="21" y2="3"></line>
            <line x1="3" y1="21" x2="10" y2="14"></line>
          </> : <>
            <polyline points="15 3 21 3 21 9"></polyline>
            <polyline points="9 21 3 21 3 15"></polyline>
            <line x1="21" y1="3" x2="14" y2="10"></line>
            <line x1="3" y1="21" x2="10" y2="14"></line>
          </>}
      </svg>
      {isFullscreen ? 'Exit Fullscreen' : 'Fullscreen'}
    </button>
    <a href={iframeUrl} target="_blank" rel="noopener noreferrer" style={buttonStyle} onMouseEnter={e => {
    e.target.style.backgroundColor = hoverBg;
    e.target.style.borderColor = hoverBorder;
  }} onMouseLeave={e => {
    e.target.style.backgroundColor = defaultBg;
    e.target.style.borderColor = defaultBorder;
  }}>
      <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
        <path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"></path>
        <polyline points="15 3 21 3 21 9"></polyline>
        <line x1="10" y1="14" x2="21" y2="3"></line>
      </svg>
      Open in new tab
    </a>
  </div>
  <iframe ref={iframeRef} src={iframeUrl} title={`Chift Coverage Matrix - ${api}`} style={{
    height: 'max(500px, 80vh)'
  }} className="w-full" allowFullScreen />
  <blockquote>
    <p>
      <strong>Matrix Legend 🧭</strong>
    </p>
    <table>
      <thead>
        <tr>
          <th>Status</th>
          <th>Meaning</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td>✅ Implemented</td>
          <td>Endpoint is implemented and available.</td>
        </tr>
        <tr>
          <td>❌ Not supported</td>
          <td>
            Endpoint is not supported by the target software (connector
            limitation). Cannot be implemented.
          </td>
        </tr>
        <tr>
          <td>💬 On request</td>
          <td>
            Endpoint is not implemented but feasibility is validated. Can be
            implemented on request — contact your Chift point of contact to
            discuss scope and timing.
          </td>
        </tr>
        <tr>
          <td>🔎 To be analyzed</td>
          <td>
            Endpoint is not implemented and feasibility has not yet been fully
            assessed. Analysis is pending.
          </td>
        </tr>
      </tbody>
    </table>
  </blockquote>
</>;
};

<ConnectorCardIframe api="accounting" connectors="DATEV" />

<Accordion title="Overview Legend 🧭">
  <OverviewLegend showTitle={false} />
</Accordion>

## Introduction

DATEV is by far one of the most widely used accounting platforms in Germany, with two distinct products relevant for your accounting integrations:

* **DATEV Rechnungswesen** — on‑premise core accounting system.
* **DATEV Unternehmen Online (DUO)** — cloud platform for document management and collaboration with accountants.

Chift’s DATEV connector gives you **unified access to both systems through a single integration layer**, abstracting the complexity of choosing one point of access or the other.

There are **no major restrictions**. Chift’s connector supports **full accounting integration** with minimal setup, including posting and retrieving journal entries, managing master data, invoices, analytical accounting, and attachments.

## Configure DATEV

**Prerequisite(s)**

* You must have premium access in your Chift account to activate this connector.
* Rechnungswesen: no additional prerequisites if you expose the API on your own (see below).
* DUO: requires a Client ID and Secret (Chift can provide these so you don’t need your own).

**Activation Process**

1. Activate the DATEV connector(s) in your Chift environment.

   There are **two connectors corresponding to the two connection methods**:

   * **Public URL method** (requires external access to the DATEV API).
   * **Local Agent method** (does not require URL exposure; agent installed on server).

   You can activate **one or both connectors**, depending on whether you want to support both connection methods for your users.

## Test DATEV

Testing against a real DATEV instance can be challenging due to how DATEV environments are provisioned. Options include:

* Request a **DATEV test environment** (can be slow or costly), or
* Use **beta partners** with existing DATEV access — a pragmatic option if your integration is already live and you need test coverage.

Chift can help with both approaches.

## Connect to DATEV

<Tip>
  ## Connection options

  DATEV’s architecture imposes constraints on external access. Chift supports these scenarios:

  * **Expose local API:** Simple and fast if you can make the URL externally accessible. You can also use the [Riecken Cloud Gateway](https://cloudgateway.riecken.io/index.html), which exposes the local DATEVconnect API externally.
  * **Local agent installation:** Needed when URL exposure is restricted. Ensures DATEV security guarantees are maintained.

  **Additional context:**

  * For attachments, Chift uses **DUO**, which requires client and consultant numbers.
  * Depending on setup, activation may require IT manager involvement (expose URL or install agent).
  * Planned DATEV API release (Q1 2027) will introduce a new connector simplifying activation further.
</Tip>

Chift offers **two ways to connect**, both providing **identical capabilities**. The difference lies in installation and prerequisites:

1. **Public URL Method** (preferred when possible)
   * Requires exposing the local DATEV API URL externally.
   * Quick activation once URL is accessible.
   * IT manager or integrator involvement is needed.
   * [Activation guide](https://help.chift.app/articles/9938133153-datev?lang=en)
2. **Local Agent Method** (used when URL cannot be exposed)
   * Installs an agent on the DATEV server to proxy requests internally.
   * No URL exposure required.
   * Requires a Windows user with proper permissions for installation.
   * [Activation guide](https://help.chift.app/articles/6424533057-datev-localagent?lang=en)

**Note:** Both methods use the same DATEV entry point; the user experience and capabilities are identical.

## Coverage

<CoverageIframe api="accounting" connectors="DATEV" />

## Troubleshooting

### Specific errors for DATEV:

| Error Code                            | Error description                                                                                                                     | Resolution                                                                                            |
| ------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- |
| ERROR\_CONNECTOR\_AUTHENTICATION      | An error occurred while authenticating with DATEV                                                                                     | Verify that your account still has the rights to use the API or that your user still exists           |
| CREDENTIALS\_ERROR                    | The provided Client Number and/or Consultant Number doesn't seem to be correct or you don't seem to have access to it                 | Verify that your Client Number and/or Consultant number is still valid or that your user still exists |
| ERROR\_NO\_DOCUMENT\_MANAGEMENT       | The client doesn't have the document management feature                                                                               | Verify that your client has access to the document management features                                |
| ERROR\_ACCOUNT\_NUMBER\_CONFIGURATION | Ledger accounts can only be used with configured VAT codes in DATEV.                                                                  | Configure the correct VAT codes on the ledger account.                                                |
| ERROR\_ATTACHMENT\_UPLOAD             | The attachment upload to DATEV Unternehmen failed.                                                                                    | Verify the file format and encoding, then retry the upload.                                           |
| ERROR\_INVALID\_HOST                  | The DATEV API URL is not valid or not accessible.                                                                                     | Verify the URL starts with 'https\://' or 'http\://' and is a valid DATEV Rechnungswesen URL.         |
| ERROR\_INVALID\_BODY                  | When pushing journal entries into DATEV, VAT codes must be specified using the tax\_info attribute, not separate entry items for VAT. | Use the tax\_info attribute to specify VAT codes instead of separate VAT line items.                  |
| ERROR\_IMPORT\_FAILED                 | The asynchronous EXTF import job returned an unknown error (DATEV Buchungsdatenservice).                                              | Retry the request. If the error persists, contact Chift support.                                      |
| ERROR\_NO\_EXTF\_API\_ACCESS          | The Buchungsdatenservice/EXTF import feature is not activated for this company (DATEV Buchungsdatenservice).                          | Activate the Buchungsdatenservice feature in DATEV for the company.                                   |