How do I integrate DATEV Unternehmen Online API with my application?

Apideck provides a unified Accounting API that makes DATEV Unternehmen Online integration simple. Sign up for free, enable DATEV Unternehmen Online in your dashboard, and use our Vault component to let your users connect their DATEV Unternehmen Online accounts. We handle OAuth authentication, token refresh, and data normalization automatically.

What DATEV Unternehmen Online data can I access through Apideck?

Our DATEV Unternehmen Online integration supports 9+ data models including datev companies, clients, general ledger accounts, and accounting sequences. You can perform read and write operations through our unified API, working with the same code structure across all accounting platforms.

How does DATEV Unternehmen Online authentication work with Apideck?

Apideck's Vault handles DATEV Unternehmen Online authentication completely. Your users connect their DATEV Unternehmen Online accounts through our secure, white-label UI. We manage OAuth tokens, automatic refresh, and credential storage, so you never have to implement DATEV Unternehmen Online's auth flow yourself.

Does Apideck support DATEV Unternehmen Online webhooks?

Yes, Apideck provides real-time notifications when DATEV Unternehmen Online data changes. Our unified webhook system normalizes events across all integrations, so you handle DATEV Unternehmen Online events with the same code you use for other accounting platforms.

Why use Apideck instead of DATEV Unternehmen Online's direct API?

Using Apideck's unified API instead of DATEV Unternehmen Online's direct API saves significant development time. You get normalized data models, automatic auth handling, and the same integration code works with 200+ other apps. When DATEV Unternehmen Online updates their API, we handle the changes so your integration keeps working.

How quickly can I build a DATEV Unternehmen Online integration?

Most developers ship a working DATEV Unternehmen Online integration within a day using Apideck. Sign up for a free trial (no credit card required), enable DATEV Unternehmen Online, and make your first API call within minutes. Our SDKs for Node.js, Python, and other languages make implementation straightforward.

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DATEV Unternehmen Online API integration

Build DATEV Unternehmen Online integrations in minutes, not months. One API to sync permissioned accounting data with DATEV Unternehmen Online and 39+ other apps.

Get started for free Explore DATEV Unternehmen Online docs

9+ data models

SOC 2 certified

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Real-time webhooks

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Integration Guide

How to integrate DATEV Unternehmen Online API in 3 steps

Build a production-ready DATEV Unternehmen Online Accounting API integration in minutes, not months. No OAuth headaches, no maintenance burden.

Step 01

Create your Apideck account

Sign up for free and enable DATEV Unternehmen Online in your Apideck dashboard. Configure which accounting data your app needs access to.

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Full API access
No credit card required

Step 02

Connect DATEV Unternehmen Online via Vault

Use our pre-built Vault component to let your users securely connect their DATEV Unternehmen Online account. We handle OAuth, token refresh, and credential storage.

White-label auth UI
Automatic token refresh
SOC 2 certified

Step 03

Start syncing accounting data

Make API calls to read and write accounting data from DATEV Unternehmen Online. Use the same code to connect 200+ other apps.

Normalized data models
Real-time webhooks
Full CRUD support

Start DATEV Unternehmen Online integration

Free trial • No credit card required • Setup in under 5 minutes

Code Example

DATEV Unternehmen Online API integration code

Integrate DATEV Unternehmen Online with just a few lines of code. Our unified Accounting API normalizes data across 200+ integrations, so you write once and connect everywhere.

Normalized responses — same data structure for all accounting apps
Official SDKs — Node.js, Python, and more with TypeScript support
Full documentation — interactive API reference with DATEV Unternehmen Online-specific examples

View DATEV Unternehmen Online API documentation →

import { Apideck } from '@apideck/node'

const apideck = new Apideck({
  apiKey: process.env.APIDECK_API_KEY,
  appId: process.env.APIDECK_APP_ID,
  consumerId: 'user-123'
})

// List invoices from DATEV Unternehmen Online
const { data } = await apideck.accounting.invoicesAll({
  serviceId: 'datev-unternehmen-online'
})

console.log(`Found ${data.length} invoices`)

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Why integrate DATEV Unternehmen Online with Apideck?

Build a production-ready DATEV Unternehmen Online integration with enterprise-grade reliability

Ship DATEV Unternehmen Online integration fast

Go live with DATEV Unternehmen Online in days, not months. Our unified Accounting API handles authentication, data normalization, and error handling so your team can focus on building features.

9+ DATEV Unternehmen Online data models

Access 9+ data models for DATEV Unternehmen Online including companies and customers. Read and write data through a single standardized API.

Real-time webhook coverage

Keep your product synchronized with DATEV Unternehmen Online using webhooks. Receive push updates for invoices, customers, payments, and more without polling.

Get started for free

API Resources

Push and pull DATEV Unternehmen Online data

Use our Unify API to get real-time data from DATEV Unternehmen Online

General Ledger Accounts

Accounting API

Tax Rate Accounts

Accounting API

Clients

Accounting API

Customer Accounts

Accounting API

Supplier Accounts

Accounting API

Accounting Sequences

Accounting API

Sums And Balances

Accounting API

Documents

Accounting API

Datev Companies

Accounting API

View API Reference

Technical Specifications

DATEV Unternehmen Online API integration details

Everything you need to know about integrating DATEV Unternehmen Online through our unified Accounting API.

Authentication

OAuth 2.0

Secure token-based authentication

Data Models

9+ resources

Access 9+ normalized data models

Webhooks

Virtual webhooks

Real-time data sync on changes

Security

SOC 2 Type II

Enterprise-grade security certified

Token Management

Automatic refresh

Never worry about expired tokens

API Format

REST + JSON

Standard REST API with JSON responses

DATEV Unternehmen Online direct API vs Apideck unified API

Feature	Direct DATEV Unternehmen Online API	Apideck Unified API
OAuth implementation	Build from scratch	Handled by Vault
Token refresh	Manual handling	Automatic
Data normalization	DATEV Unternehmen Online format only	Normalized across 200+ apps
Error handling	Platform-specific	Unified error codes
Rate limit management	DIY implementation	Built-in throttling
Maintenance	Ongoing updates required	We handle API changes
Additional integrations	Separate work each	Same code, 200+ apps

View complete DATEV Unternehmen Online API reference →

Use Cases

What integrations can you build with DATEV Unternehmen Online?

Power these accounting workflows with DATEV Unternehmen Online data through our unified API.

Payroll Accounting

Streamline payroll data flow between HR systems and accounting platforms seamlessly.

Learn more

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DATEV Unternehmen Online Integration FAQ

Common questions about integrating DATEV Unternehmen Online with your application

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