Technologies / Programming

KSeF API - In-depth technical workshop for Developers and Architects

An advanced technical workshop to prepare IT teams for deep integration with the KSeF software interface. The program includes a fundamental overhaul of the authentication model, a detailed analysis of the current invoice schema, and implementation of fallback scenarios and offline operation. Participants perform actual integrations with the test environment during live programming sessions. The hands-on methodology provides direct experience with modern architectural patterns and system integration best practices.

Issues

Integration of software interfaces
Authentication and authorization model
Certificates and session tokens
XML schema of structured invoices
Limiting the number of queries
Certificate management
Error handling and validation
Offline and emergency modes of operation
QR codes
Fail-safe architecture
Live programming and testing
Test environments

Benefits

The certificate-based authentication model will be fully understood and implemented
Integration with the KSeF programming interface will provide the full functionality required by the business
The current invoice schema will be correctly implemented with all critical fields included
Failover and offline operation scenarios will guarantee the continuity of the system
Error handling and validation will be built in at the implementation stage
Practical integration skills will be acquired during programming sessions on a test environment
The system architecture will be designed according to technical best practices

Who is this training for?

Information systems and integration architects

Senior back-end and full-stack application developers

Programmers working with ERP and financial systems

Deployment automation specialists responsible for environments

Technical team leaders

Middleware integration engineers

Business application developers

Prerequisites

Advanced knowledge of server-side application programming in any language
Experience integrating with programming interfaces and handling JSON and XML formats
Basic knowledge of certificates, session tokens and authentication mechanisms
Ability to work with ERP or financial systems in an integration context
Knowledge of the basics of invoicing processes and accounting documents

Training program

Taxpayer application and tools for developers

Technical implementation planning
New authentication and authorization model
Fundamental change: certificates instead of tokens
Analysis of authentication flow in KSeF
Generate and manage internal certificates
Entitlement management and the ZAW-FA model
Acquisition of short-term session tokens
KSeF programming interface - new features

Limiting the number of requests and managing limits
Programmatic certificate management

Metadata support and new capabilities
XML Workshop: An in-depth analysis of the current invoice structure
Logical structure of structured invoices
Mapping business data to mandatory fields
Analysis of critical fields: type of correction, identifiers, subjects
Handling of advance and settlement invoices
Technical handling of binary attachments
Implementation of offline and emergency work scenarios
Architecture of fault-tolerant systems
Offline mode vs. system unavailability

Generation and verification of QR codes
Strategies for caching and synchronizing data
Live programming session: integration with test environment
Authentication on a test environment
Sending structured invoice and validation
Receiving an official certificate of receipt

Practical interface error handling

Delivery Methods

Online

Convenience of participating from anywhere
Interactive live sessions with trainer
Materials available for 30 days
No travel costs

On-site

Direct contact with trainer and group
Intensive hands-on workshops
Networking with other participants
Full focus on learning

Frequently asked questions

What are the prerequisites for this training?

For KSeF API - In-depth technical workshop for Developers and Architects we recommend: Advanced knowledge of server-side application programming in any language; Experience integrating with programming interfaces and handling JSON and XML formats; Basic knowledge of certificates, session tokens and authentication mechanisms.

What is the format and duration of this training?

The training lasts 2 days and is available in online and on-site format. Sessions run from 9:00 AM to 4:00 PM. We can also customize the schedule to fit your team's needs.

Who is this training designed for?

This training is designed for: Information systems and integration architects; Senior back-end and full-stack application developers; Programmers working with ERP and financial systems.