SAP Integration with the National System of e-Invoices
Mandatory e-invoicing in National System of e-Invoices.
Choose the best solution for your business: SAP DRC or author's National System of e-Invoices Cockpit for SAP and automate the invoice exchange process.

Why is Integration with National System of e-Invoices Crucial?
National System of e-Invoices is a government platform for issuing and receiving structured invoices. It has been operational since 2022, for now as an optional solution. Companies can use it alongside traditional paper invoices or electronic invoices in PDF format. The goal of the system is to simplify the circulation of invoices and make billing more transparent.
Since when will National System of e-Invoices be mandatory?
Under the new regulations, from February 1, 2026 Entrepreneurs doing business in Poland will have to issue invoices through National System of e-Invoices. The obligation applies to business-to-business transactions (B2B), but will not include sales to individual customers (B2C).
Automatic transmission of invoices
Compliance with national and European legal requirements
Transparency and control over documents
Monitor the status of invoices
Advanced reporting

Why to Start the Implementation Right Now?
Time for Testing and Training
Starting the deployment now provides the comfort of quiet testing and team preparation without the pressure of a deadline.
Process Optimization
Integration with National System of e-Invoices is an opportunity to organize and automate key financial and accounting areas.
Compliance
You are assured that your company meets all applicable requirements and is ready for the upcoming changes.
Data Security
You gain control over the invoices you send and a guarantee of compliance with security standards.
Comparison of Kokpit KSeF and SAP DRC solutions
National System of e-Invoices Cockpit for SAP
- Lukardi's proprietary solution dedicated to the National System of e-Invoices integration
- Comprehensive functionality to support e-invoicing and advanced reporting
- Customizable
- On-premise solution for SAP

SAP DRC
- SAP global reporting and electronic document exchange solution
- Compliance with national and international legal requirements
- An application using the capabilities of the SAP BTP platform
- Cloud solution supporting SAP in the cloud and On-premise

Schedule a presentation and learn about both solutions
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SAP Integration with National e-Invoicing System - How Does Invoicing Automation Work in Practice?
As of February 1, 2026, the National e-Invoicing System (KSeF) will become mandatory for businesses in Poland. This means a real revolution in the area of invoicing and tax settlements. All structured invoices will be
FAQ for entrepreneurs
1. what are the costs of implementing KSeF for companies?
2 What if the invoice sent to KSeF is rejected?
Lukardi S.A. is responsible for the use of personal data in a secure manner and in accordance with applicable laws, in particular the provisions of the RODO.
We take special care to ensure that your personal information is:
- processed lawfully, fairly and transparently;
- collected for specific, explicit and legitimate purposes and not subjected to further processing incompatible with those purposes;
- correct, updated as necessary and relevant to the purposes for which they are processed;
- stored in a form that allows identification of the persons to whom they relate, for no longer than necessary to achieve the purpose of processing.
3. is it possible to issue invoices in foreign currency in KSeF?
Yes, KSeF supports invoices in foreign currencies. It is recommended to use software integrated with KSeF that will ensure invoice compliance.
4. does KSeF support proforma invoices?
No, proforma invoices are not supported in KSeF because they are not VAT invoices.
5. is it possible to issue advance invoices in KSeF?
Yes, KSeF supports advance invoices. If an advance payment is received from a counterparty, the entrepreneur should issue an advance invoice in accordance with applicable regulations. Once the transaction is completed, it is possible to issue a final invoice that takes into account the previous advance payment.
6. is it possible to invoice individual customers (B2C)?
Although KSeF allows invoices to be issued to individuals, they are not currently required to be recorded in the system.
7. does KSeF support self-invoicing?
Yes, buyers can self-invoice under KSeF, provided they are given the appropriate authority.
8. can an accounting firm issue invoices on behalf of a company?
Yes, KSeF allows you to give permissions to external entities, such as accounting firms, which can issue invoices on behalf of your company.
9. Is it possible to attach attachments to invoices in KSeF?
No, KSeF does not support invoice attachments, but it does allow you to add links to additional documents.
10. how can KSeF invoice errors be corrected?
The system allows you to issue any number of correction invoices to a single sales invoice, but does not provide for the generation of correction notes.
11. do people with undeclared activities have to use KSeF?
Yes, if they make sales to businesses, they are required to issue invoices through KSeF.
12. do invoices for foreign contractors have to be issued in KSeF?
Yes, invoices documenting sales to foreign contractors, including exports of services and WDT, should be issued in KSeF.
13. does KSeF support correction invoices?
Yes, the system allows you to issue an unlimited number of correction invoices for a single sales invoice.
14. does KSeF require an electronic signature for invoicing?
No, KSeF itself provides invoice authorization, so no electronic signature or qualified seal is necessary.
15. what are the consequences of not issuing an invoice in KSeF after the entry of the obligation?
After the mandatory use of KSeF, failure to invoice in the system may result in financial penalties.
16. does KSeF allow automatic sending of invoices to contractors?
No, KSeF acts as an invoice repository and does not support the automatic sending of documents to recipients. However, companies can use software that integrates KSeF with accounting systems to automatically transmit invoices.
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