Services on Pfisterer Consulting

Projects & Systems

Mon, 01 Jan 0001 00:00:00 +0000

ERP systems, data migration projects, and system landscapes are not primarily IT topics – they are organizational and business process topics with a technical foundation. I help you set up systems and processes so they work in daily operations.

→ Requirement Engineering & Interfaces – a core part of my work in this area.

Typical Situations

ERP implementation or migration – System design, process requirements, and training don’t align. After go-live, things stall.
Requirements and interfaces – Nobody has clearly defined which data flows where. Manual workarounds and data inconsistencies.
Reporting and controlling – Data quality is off, every report is assembled manually in Excel.
Data migration – Mapping errors, duplicates, incomplete history. Without a clear validation process, it gets expensive.
M&A integration – Legacy systems undocumented, interfaces grown organically, systematic planning missing.
Project governance and PMO – Costs, timelines, and scope are diverging. Structured governance is missing.

My Approach

Phase 1: Clarification and quick check – Current state, real vs. wishful requirements, biggest risks.

Requirement Engineering & Interfaces

Mon, 01 Jan 0001 00:00:00 +0000

From Requirements Analysis to Working Interface

A system is only as good as its requirements – and a system landscape only as stable as its interfaces. For over a decade, I worked in close collaboration with Information Desire Software GmbH (Projectile / IDS), specifying, testing, and deploying interfaces between ERP, CRM, DMS, financial accounting, and third-party systems. Among other things, the industry solution Projectile-HOAI for engineering and planning firms was developed from my specifications.

Compliance

Mon, 01 Jan 0001 00:00:00 +0000

Mandatory digital requirements do not exist out of ill intent from regulators. They create reliability – in finances, working hours, and whistleblower protection. When implemented correctly, they also bring internal clarity instead of overhead.

The Five Core Compliance Topics

E-Rechnung (mandatory e-invoicing) – Since 2024, invoices must be transmitted in a structured format (XRechnung), not just as PDFs. This affects invoice creation, IT systems, and interfaces to customers and tax authorities.
GoBD (German digital bookkeeping regulations) – Governs how documents and accounting data must be stored: digitally, securely, and traceably. Covers everything from paper receipts and emails to digital invoices.
Time Tracking – The German Working Hours Act requires complete, reliable recording of working hours. Decisive for legal certainty regarding overtime and disputes.
Whistleblower Protection (Hinweisgeberschutz) – From 50 employees onward, a whistleblower system is mandatory. It must be implemented in a legally correct yet practical way.
KassenSichV (fiscal security regulation for cash registers) – Cash registers in retail, hospitality, and freelance businesses handling cash must be tamper-proof. Older systems are often non-compliant.

How Implementation Works

Assessment: First, we jointly understand how your processes run today – which systems are in use, where documentation exists, and where it does not.

AI & Automation

Mon, 01 Jan 0001 00:00:00 +0000

AI as a Standalone Service – or Add-On to Your Project

AI is no longer a future topic – it is a practical tool for everyday relief. I offer AI automation standalone (e.g. for manual emails, data processing, reports) or as an add-on to ongoing ERP/compliance projects. This is not about “AI strategy” – it is about concrete automations that work tomorrow, with the tools available today.

Realistic Use Cases

Text-Based Routine Tasks Emails, standard texts, meeting notes, summaries – employees often spend 20–30 % of their time on these. With AI assistants and no-code tools, this can be significantly accelerated or fully automated.