SAP ERP decommissioning: Expert insights for your S/4HANA journey

13 February 2026 | Decommissioning of Legacy Systems, Enterprise Legacy System Application (ELSA), S/4HANA migration

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The journey to S/4HANA is fraught with complexity. A single ECC system can have 500-600 interfaces with numerous satellite systems, and nobody truly knows what happens when you switch to something new. Industry research reveals a troubling pattern: organisations complete their ECC to S/4HANA transformation, build business cases assuming they’ll retire old systems, but ultimately keep legacy systems running because they don’t know what to do with the data. The result? Unrealised cost savings and ongoing operational burdens. 

  • Continuous software updates for legacy systems 
  • Ongoing security maintenance requirements 
  • Operational overhead for non-productive systems 
  • Compliance risks from outdated data management capabilities 

In today’s day and age, data is the new oil, and your historical information holds untapped potential for AI, machine learning, and predictive analytics. 

True transformation means completing the full transition from old to new. Migrating only part of your data leaves the job half-done; it is imperative to ensure proper SAP ERP decommissioning while retaining access to your legacy data. Why? Because, the data that remains in your ECC system is highly valuable, containing critical business information that should be available for analytics, data mining, and strategic decision-making. 

With AI integration now embedded across enterprise systems, organisations can train models to leverage data from legacy sources, compiling insights that were previously impossible to extract. The question isn’t whether to preserve your legacy data, but how to make it accessible and actionable. 

The journey to S/4HANA represents an opportunity to fundamentally transform how your organisation manages and leverages data assets. With proper planning and the right solutions for SAP ERP decommissioning, you can achieve your transformation goals whilst preserving access to valuable historical information and positioning your business for AI-driven innovation. 

TJC Group’s 25+ years of expertise in data volume management and legacy system decommissioning ensures your transformation delivers maximum value whilst maintaining compliance and operational efficiency. 

Ready to discuss your S/4HANA journey? Contact us today!