DATEV + IIO: Automated Bookkeeping Without Manual Rework

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DATEV Integration: Bookkeeping on Autopilot

Manually posting incoming invoices costs time, introduces errors, and costs money. IIO automates the entire process — from PDF recognition to DATEV transfer.

The Automated Process

Step 1: Invoice intake Email or upload → OCR recognition → supplier, amount, tax rate, cost centre automatically extracted.

Step 2: 3-way match Automatic reconciliation: purchase order ↔ delivery note ↔ invoice. Discrepancies → HITL gate.

Step 3: Posting Account mapping per DATEV SKR03/04. Posting entry created and verified automatically.

Step 4: Approval HITL gate for payments > €500. Below that, automatic approval.

Step 5: SEPA + DATEV SEPA XML for payment runs + EXTF export for DATEV Unternehmen Online.

Integration With Your Accountant

IIO automatically transfers weekly:

• Posting batches (DATEV EXTF format)
• Document scans (original PDFs)
• Open-items list

Your accountant receives fully prepared data — no follow-up questions.

ROI

Task	Manual	With IIO
Post an incoming invoice	8 min/invoice	0 min (auto)
Prepare a payment run	2h/month	10 min (review)
DATEV transfer	4h/month	0 min (auto)

At 50 incoming invoices/month: 7h saved.

Bookkeeping automation in the IBO package →

What the DATEV Integration Actually Delivers

Without IIO-DATEV integration: export CSV → import into DATEV → correct errors → ask the accountant → repeat next week.

With IIO: posting is created → DATEV EXTF format automatically → upload to DATEV Unternehmen Online → accountant sees the current state in real time.

Technical Details

EXTF Format (DATEV Standard) IIO generates valid EXTF files for:

• Posting batches (creditors, debtors, general ledger accounts)
• Master-data supplements
• Payroll postings (LODAS-compatible)

DATEV Unternehmen Online Upload happens via the official DATEV API. No password handoff, no manual uploading.

LODAS Interface Payroll from IIO → LODAS format → direct import at the accountant. Payroll without manual handover.

Which Accounting Accounts Get Mapped?

IIO uses the SKR03 chart of accounts as the default. SKR04 is configurable. Tenant-specific account mappings are versioned in datev-account-mapping.yaml.

Compliance: GoBD Conformity

Every posting gets an immutable audit trail (append-only ledger). This meets the GoBD requirements for immutability and traceability.

IIO Business Operations → IIO Compliance →