The Compliance Infrastructure for E-Invoicing
From validation to audit ledger – one API for all clients.
Everything You Need
Six integrated modules covering the full compliance lifecycle — from validation to audit.
XRechnung Validation
Schema validation and business rules for CII D16B and UBL 2.1
DetailsZUGFeRD Generation
PDF/A-3 with embedded EN 16931 XML – fully veraPDF validated
DetailsAudit Ledger
SHA-256 hash chain, append-only, GoBD-compliant (§257 HGB)
DetailsJSON Mapping Engine
Deterministic JSON→EN 16931 XML transforms – versioned and published
DetailsSDKs
TypeScript, Python, Go – OpenAPI 3.1 generated with manual wrappers
DetailsSAP Connector
IDoc INVOIC01/02, S/4HANA + ECC, headless daemon
DetailsHow Integration Works
A six-step pipeline that turns raw invoice data into auditable compliance records.
JSON Input
Mapping Engine
Schema Validation
Business Rules
Audit Ledger
Webhook/API
Compliance Standards
Certified against every major European e-invoicing standard and regulation.
XRechnung 3.x
ZUGFeRD 2.x
EN 16931
KoSIT
Peppol BIS
GoBD
Frequently Asked Questions
Common questions about our e-invoicing compliance infrastructure.
Most system integrators are up and running in under 30 minutes. Our SDKs and local CLI make onboarding simple.
XRechnung (CII D16B + UBL 2.1), ZUGFeRD 2.1/2.2, EN 16931, and Peppol BIS Billing 3.0.
Yes, our Local CLI runs all schemas and business rules locally – no network required.
TLS 1.3, AES-256-GCM, tenant-isolated KMS keys, and a tamper-proof audit ledger.
Yes, start free in the sandbox – no credit card required.
Still have questions? Contact our team
Ready to Integrate? Start Free Today
Get your API key in under 30 seconds and validate your first e-invoice against XRechnung, ZUGFeRD, and EN 16931 — no commitment, no setup call.