Source and process mapping
Documented trigger, required fields, roles, approvals and a clear responsibility boundary.
All DATEV products
Product 01 · Foundation
Available as a scoped pilot projectTezza Web2DATEV Core
From the website order to a prepared DATEV handover – without manual double entry in the normal path.
A technical invoicing gateway for websites, portals and web apps. It receives approved business events, maps them to a consistent invoice model and exposes errors before handover.
A good fit for
A defined use case instead of a universal connector
- B2B service providers, agencies, IT and SaaS companies
- Trades, building and field-service businesses
- Consulting, training, rental and recurring services
- Websites with ordering, booking, customer portals or a custom web app
Deliverables
What you receive
REST/webhook intake
A secured, event-driven intake for the agreed website or application process.
Consistent invoice model
Normalised customer, invoice, item, payment and reference data as a stable technical foundation.
E-invoice output
Technical generation of the agreed XRechnung or ZUGFeRD format from approved source data.
Validation and duplicate controls
Format, required-field, arithmetic and duplicate checks with explicit exceptions instead of silent failures.
DATEV-compatible handover package
A file/document export agreed with the tax adviser, including status, error log and acceptance test.
Process
How the pilot works
- 1Event
An approved order, booking or invoice starts the data route.
- 2Normalisation
Source data is mapped to the agreed canonical invoice model.
- 3Technical validation
Format, required fields, arithmetic values and duplicates are checked.
- 4Handover or exception
Valid cases enter the agreed export package; open cases enter the review area.
Prerequisites
What we need to start
- One clearly scoped source system and one prioritised invoice type
- Test data without real personal data, credentials or accounting secrets
- Contacts for the website/application and tax-adviser sides
- Professionally approved required fields, tax logic and handover rules
DATEV products
Other DATEV products
DATEV RDS1 Connect
Transfer Web2DATEV documents and structured invoice data to DATEV Unternehmen online through a controlled route.
Open productTRAFFIQX E-Invoice Exchange
Send e-invoices from web processes, receive incoming invoices and trace delivery status.
Open productDATEV Integration Care
Keep the data route visible, actionable and supportable, even when a source system or interface rejects a case.
Open productSafe first step
Start with a system map, not credentials
The guided intake records only system types and an anonymised process. It keeps the existing DATEV request and admin workflow and does not connect a live DATEV environment.