Mastering KSeF and Fa(3) for Business Central & NAV

The definitive connector for Polish e-invoicing compliance — built for ERP professionals who demand real-time validation, zero manual XML handling, and seamless integration with Microsoft Dynamics 365 Business Central and NAV.

Mastering KSeF and Fa(3)
Basic

KSeF & Peppol Access Point

Business Central App (access point to Peppol and KSeF). A smart entry-point for smaller companies.

28.25 PLN / mo.

+ 0.29 PLN per transaction
Introduction

The Digisense Access Point is an intuitive solution that makes it easy to send and receive e-invoices in KSeF Fa(3) and Peppol BIS formats.

Integration

Especially suitable for small businesses and SMEs using Microsoft Dynamics 365 Business Central. Available as an app in AppSource for quick setup.

Features

Send and receive Fa(3) & Peppol BIS documents. Supports KSeF infrastructure. Access via web portal.

Pricing & usage

28.25 PLN/mo. Extra transactions: 0.29 PLN/ea.

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Growth

Digisense e-invoice Connector

Automated Windows-based solution for full control over sending and receiving e-invoices via KSeF and Peppol.

57.10 PLN / mo.

Incl. 200 transactions per month
Introduction

Digisense e-invoice Connector Growth is a Windows program running as a background process with a user-friendly interface for efficient e-invoice handling. Quickly send and receive a large volume of e-invoices in KSeF Fa(3) and Peppol BIS formats.

Integration

Ideal for small to medium-sized companies using Business Central or Navision (Legacy). Runs as a stable Windows process or as an in-app solution in Business Central via AppSource. Automatically handles invoices via folder structure or API.

Features

Automated background sync. Supports KSeF Fa(3), Peppol BIS, and many more upcoming international standards.

Pricing & usage

57.10 PLN/mo. Extra 200 transactions: 39.50 PLN/mo.

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Professional

Digisense Connector / AI PDF / Digiflow

All the benefits of Growth, plus AI-based data extraction from PDF, digital approval, and unlimited archive.

1.18 PLN / document

Setup fee: 2,745 PLN
Introduction

Digisense e-invoice Connector Professional provides a complete document management and approval flow. With the solution, you can easily handle e-invoices in KSeF Fa(3) and Peppol BIS, including advanced AI data lifting.

Integration

With Connector Professional / Digiflow, you get: Quick setup, stable operation, and compatibility with Business Central and Navision. Plus OCR conversion of PDF to Fa(3), digital approval workflows, and unlimited users.

Features

Automated background sync. AI OCR: Convert PDF to Fa(3). Digital approval workflow. Unlimited users and secure archive. 99.6% SLA.

Pricing & usage

1.18 PLN per received document. Onboarding and installation: 2,745 PLN (one-time).

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Enterprise/Partner

Digisense e-invoice REST API

A fully mature REST API solution for high-volume handling. Scalable and ready for partner integration.

Individual pricing

Based on volume
Introduction

The Digisense Enterprise/Partner solution is a mature REST API that supports all the needs a partner has regarding high-volume e-invoice handling. It offers a smart web interface for smooth integration and high reliability.

Integration

Developed for ERP systems, integrators, and wholesalers. Supports automated sending/receiving of KSeF Fa(3) and Peppol BIS directly integrated into your existing platforms.

Features

REST API/SDK. Service Level Agreement 99.6%. Revenue sharing. Migration support. Standard conversion from native formats to Fa(3).

Pricing & usage

Individual pricing based on volume and partner terms.

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Ready to get started?
Connect with our specialist

Kaare Bo Garde Rasmussen

Kaare Bo Garde Rasmussen

Senior Consultant
kbr@digisense.dk

+45 26 21 49 81

Research & authority

Research & authority deep technical expertise, validated at Embassy Level

The Danish Embassy research

Digisense conducted a comprehensive technical deep-dive into the Polish e-invoicing landscape in direct collaboration with The Trade Council at the Danish Embassy in Warsaw.

This research covers the full transition from Fa(2) to Fa(3) — analysing schema differences, legal nuances, validation rule changes, and the practical implications for ERP systems operating in the Polish market.

The result is a compliance framework built on first-hand regulatory research conducted in-country with diplomatic and trade authority backing.

Go to the report

The value of validated compliance

When you deploy the Digiflow KSeF Connector, you are not deploying an untested prototype. You are deploying a solution whose compliance logic has been scrutinized against the actual legal and technical requirements of the Polish tax authority — the Ministerstwo Finansów.

For business owners & IT managers

This level of diligence translates directly into reduced operational risk, fewer post-implementation surprises, and a future-proof connection to the Polish market. You get the peace of mind that comes with Embassy-validated research.

For partners & consultants

Offering a solution backed by official trade council research provides a stronger basis for your advisory and a unique differentiator in your portfolio. It reduces your liability and strengthens the trust your clients place in your recommendations.

The challenge

Polish e-invoicing is mandatory,
is your ERP ready?

What is KSeF?

KSeF (Krajowy System e-Faktur) is Poland's mandatory national e-invoicing platform. All VAT-registered businesses operating in Poland are required to exchange structured invoices — known as faktury ustrukturyzowane — through the KSeF portal using the Fa(3) XML standard.

The transition from the earlier Fa(2) format to Fa(3) introduces significant structural and legal changes, including stricter validation rules, revised schema definitions, and direct API submission requirements. Non-compliance carries severe financial penalties.

The central ERP gap

Out-of-the-box Microsoft Dynamics 365 Business Central and NAV do not natively support direct KSeF integration. Finance teams are left to manage complex XML generation manually, maintain government API credentials, and reconcile purchase invoices from the portal — a time-consuming and error-prone process.

Digisense closes this gap with a purpose-built connector that automates the entire invoice lifecycle: from structured data creation to real-time KSeF submission and validation, all from within your existing Business Central environment.

One Connector. Complete Invoice Automation
Digiflow Connector

One connector. Complete invoice automation.

The Digiflow KSeF Connector for Business Central and NAV automates the exchange of structured invoices directly with the KSeF portal — eliminating manual XML handling and providing real-time validation at every step.

This end-to-end automation ensures that every purchase invoice — whether originating from a Polish domestic supplier through KSeF or from an international vendor via Peppol — arrives in Business Central through a single, unified and fully auditable process. No exceptions, no manual intervention, no compliance risk.

Product features

Everything your BC environment needs for KSeF compliance

Real-time KSeF validation

Invoices are validated against the Fa(3) schema and submitted to the KSeF portal in real time. Errors are surfaced immediately within Business Central — before documents are posted.

Hybrid flow: KSeF & Peppol

One connector handles both Polish KSeF invoices and international Peppol BIS invoices — including Nemhandel/OIOUBL for Denmark — within a single, consistent BC workflow.

Foreign vendor invoices

Invoices from foreign vendors that do not pass through KSeF are handled seamlessly, ensuring all data flows into Business Central via one unified process.

Automatic compliance updates

When KSeF specifications change — and they will — we update the connector code. Your team stays focused on customers, not government API documentation.

The Digiflow Connector supports all current versions of Microsoft Dynamics 365 Business Central as well as older NAV deployments, making it the only solution needed when migrating between versions.

The Digisense Digiflow solution

One platform, multiple standards

Digisense Digiflow provides the integration and workflow layer your organisation needs—connecting seamlessly with Microsoft Dynamics NAV, Business Central, and other ERP systems without requiring disruptive modifications.

01
Poland: KSeF compliance

Automated FA(3) format generation and submission to the KSeF platform

02
Denmark: OIOUBL/Nemhandel

Native support for Danish e-invoicing standards and public procurement

03
Europe: Peppol BIS

Pan-European interoperability through certified Peppol access points

04
Unified workflow

Centralised approval processes and consolidated reporting across all jurisdictions

Our solution maintains ERP stability whilst adding the compliance and workflow capabilities needed for modern cross-border finance operations.
Whether you're on NAV, Business Central, SAP, or another platform, Digiflow integrates smoothly without disrupting existing processes.

KSeF-generated invoice

Example of an official invoice generated through the Krajowy System e-Faktur with unique KSeF number and UPO (Official Acknowledgement of Receipt)

KSeF-Generated Invoice
Invoices in Digiflow from KSeF

Invoices in Digiflow from KSeF

How KSeF invoices are automatically displayed and handled in the Digiflow platform with full integration to your ERP system

Partner programme

Become KSeF-ready in record time

Provide your Business Central and NAV customers with a fully integrated infrastructure for the Polish market — without the heavy technical lifting. As a Companial ISV partner, Digisense gives you access to a battle-tested, production-ready KSeF and Peppol infrastructure you can deploy immediately.

01

Speed to market

Avoid months of development. We handle the transition from Fa(2) to Fa(3) and all future government API updates — so you can focus entirely on customer delivery.

02

All-in-one infrastructure

One connector covers it all: KSeF for Poland, Peppol BIS for international trade, and Nemhandel/OIOUBL for Denmark. No patchwork of separate integrations required.

03

Reduced compliance risk

We take technical responsibility for compliance with complex Polish validation rules. Your implementation team is protected from the unpredictability of regulatory change.

04

You keep the customer

The customer relationship remains entirely yours. We provide the engine that ensures their invoice flow is automated — you deliver the solution and the service.

By the numbers

Why ERP partners choose Digisense

3

Standards supported

KSeF (Poland), Peppol BIS (International), Nemhandel/OIOUBL (Denmark) — all in one connector.

1

Unified BC flow

A single, consistent invoice process in Business Central regardless of invoice origin or format.

0

Manual XML steps

Zero manual XML handling required. Structured invoice creation, submission, and validation are fully automated.

100%

Compliance ownership

Digisense takes full technical responsibility for keeping the connector compliant as Polish government API specifications evolve.

Get started

Talk to a KSeF expert — book your technical consultation

Whether you are an ERP house seeking a ready-to-deploy KSeF solution for your Business Central customers, or a business looking to automate your own Polish invoice compliance, Digisense is your trusted partner.

Our Senior Consultant Kaare Bo Garde Rasmussen leads technical engagements with ERP partners and enterprise clients across Scandinavia and Central Europe. In a focused consultation, you will receive a clear picture of the integration architecture, deployment timeline, and partner programme terms — tailored to your specific Business Central or NAV environment.

Digisense is a Companial ISV partner. Our KSeF and Peppol infrastructure is production-ready, Embassy-validated, and built for the real complexity of cross-border invoice automation.

Book a technical consultation View partner programme details

KSeF integration

Business Central & NAV connector for Polish e-invoicing compliance.

Peppol BIS

International invoice exchange including Nemhandel/OIOUBL for Denmark.

Partner programme

Companial ISV network — white label ready, rapid deployment, zero maintenance.

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& European e-invoicing

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