Publication date: 28.10.2026
Reading time 1 Min
New documentation for the FA(3) KSeF 2.0 schema
E-Invoicing
What does the documentation include?
The documentation published by the Ministry of Finance details the technical and structural requirements for the new version of the FA(3) schema. It includes:
- Technical specifications for the FA(3) schema, including requirements for data format, invoice structure, and other technical details.
- Guidelines for integrators and developers to facilitate the KSeF 2.0 system implementation process in companies. Here you'll find step-by-step instructions and code examples.
- Instructions for validating invoice data in the KSeF 2.0 system, including information on checking the correctness of transmitted data.
Why is it worth reading the documentation?
The FA(3) schema has been the mandatory structured invoice format under KSeF 2.0 since 1 February 2026. The documentation helps companies understand the technical requirements and maintain compliance with Poland's e-invoicing regulations.
By carefully reviewing the documentation, companies and integrators will be able to:
- Ensure KSeF 2.0 is correctly integrated into your systems and avoid technical issues.
- Meet the applicable e-Invoicing requirements and maintain regulatory compliance.
- Optimize invoicing-related business processes by automating invoice workflows and reducing the risk of errors.
How can we help?
At Editel S.A., we offer integration support with the KSeF 2.0 system. We have experience implementing e-invoicing systems and can help ensure seamless integration with the new system version. Our services include technical consulting, KSeF integration support, and employee training.
A step towards full digitalization of invoicing
Compliance with KSeF 2.0 requirements is a key step towards fully digitizing your company's invoicing processes. The system supports faster, more secure and more efficient electronic invoice exchange. With Editel S.A., you can be sure that the entire integration process will run smoothly and in compliance with regulations.
Go to the Ministry of Finance documentation and familiarize yourself with the requirements for KSeF 2.0: [Link do dokumentacji Ministerstwa Finansów]
