Challenge
An international logistics provider faced significant challenges in meeting KSeF requirements for a specific group of customers. For a subset of customers, their outgoing invoices contained extremely high numbers of line items — in some cases reaching up to 3,000 line items per invoice.
The client relied on a custom-developed extraction program within SAP. However, the sheer volume of line items caused serious performance and runtime issues during invoice extraction. As a result, not only these complex invoices failed to process correctly, but other invoices within the same processing run were also affected. This created operational disruption and increased the risk of non-compliance with Poland’s KSeF requirements.
KGT’s Solution
KGT performed a detailed technical and functional analysis of the invoice extraction process, evaluating multiple solution paths with a strong focus on performance, stability, and control integrity.
KGT designed a targeted solution specifically for invoices with extreme line-item volumes. This approach:
- Isolated high-volume invoices from the standard extraction flow
- Significantly improved system performance without introducing new control risks
- Preserved the integrity of the existing tax and audit framework
- Introduced a parallel extraction program that can be used as a backup process
In parallel, the client optimized its SAP class program to further enhance efficiency and reduce processing time.
Results
- Performance bottlenecks resolved during invoice extraction
- Stable processing of invoices with very high line-item volumes
- Full validation of the solution for production use
- Remaining performance considerations limited to a clearly defined and controlled scenario
Impact
- Reliable KSeF compliance even for invoices with extreme data complexity
- Improved system performance and operational stability
- Reduced risk of processing delays affecting other invoices
- Scalable architecture ready for future growth and increasing data volumes
This case demonstrates how KGT combines deep SAP expertise with pragmatic tax technology design to deliver robust, SAP-integrated e-invoicing solutions for even the most demanding business scenarios
Interested in Poland KSeF Implementation Insights?
Explore how multinational organizations successfully prepared for Poland’s mandatory e-invoicing through KSeF.
Download the detailed case studies to learn how KGT helped clients overcome complex SAP, compliance, and operational challenges while ensuring a stable go-live for the February 2026 rollout: 
Poland-KSeF-Case-1-Turning-Extreme-Invoice-Complexity-into-KSeF-Compliance.pdf
Why This Matters
Digital tax regulations increasingly rely on structured reporting and government platforms such as Poland’s KSeF system. However, successful implementation requires more than technical compliance.
Organizations must ensure that regulatory changes do not disrupt operational processes, SAP performance, or finance workflows.
KGT combines tax digitalization and indirect tax expertise, SAP technical capabilities, and practical business process knowledge to ensure that organizations remain compliant while maintaining operational efficiency.
These Poland KSeF cases demonstrate how the right implementation strategy can transform complex regulatory requirements into stable, scalable, and business-friendly solutions.