“Clean Core” is one of the most discussed topics around SAP S\/4HANA\u2014and at the same time one of the most frequently misunderstood. Many companies ask themselves: Do we now have to throw away everything we have built up over the years? <\/p>\n\n
The short answer: No. But it is worth taking a closer look. <\/p>\n\n
Clean Core means keeping the SAP core free of modifications. Instead of adapting core code\u2014which makes updates more difficult, increases upgrade costs, and jeopardizes system stability\u2014extensions are implemented via official SAP mechanisms: released APIs, BAdIs, or extensions on the Business Technology Platform (BTP). <\/p>\n\n
The goal: an SAP system that remains updateable, low-maintenance, and future-proof.<\/p>\n\n
With the end of mainstream support for SAP ECC, many companies are facing migration to S\/4HANA. Anyone who drags along their accumulated mountain of modifications pays twice: once during the migration, and again with every update thereafter. <\/p>\n\n
Clean Core is not a nice-to-have\u2014it is the foundation for ensuring that S\/4HANA remains economically viable to operate in the long term.<\/p>\n\n
Many companies do not even know how many modifications they actually have\u2014and how critical they really are. This is not a failure, but the result of systems that have grown over many years. <\/p>\n\n
The first concrete step is therefore always: enable and evaluate the Clean Core analysis in your own system. Only then does it become clear what you are really dealing with\u2014and what is truly urgent. <\/p>\n\n
In our experience: not every finding is the same. The total number often sounds alarming. The truly critical cases are usually significantly fewer\u2014but they are serious. <\/p>\n\n
Modifications are carried over without reflection.<\/strong> Without checking whether the SAP standard now offers the same function. In many cases it does\u2014the custom development is simply no longer necessary. <\/p>\n\n Custom developments end up in the core.<\/strong> Even though side-by-side extensions or BTP would be the better choice. Often out of habit, sometimes due to time pressure. <\/p>\n\n Clean Core is understood as a one-off task.<\/strong> In fact, it is a continuous approach. Anyone who cleans up once and then continues as before has not internalized the principle. <\/p>\n\n At secat, we are currently taking this path ourselves with our own product QPPD. When we first subjected our codebase to a full Clean Core review, we were faced with nearly 9,000 critical findings. <\/p>\n\n What helped: a structured approach, automated analysis, prioritization\u2014and not trying to tackle everything at once. The biggest technical challenge was replacing classic SAP GUI technologies such as ALV Tree and ALV Grid, which we replaced with UI5. <\/p>\n\n We are not finished yet. But we know exactly what each phase of this process feels like\u2014and what truly helps. <\/p>\n\n We support companies on the Clean Core journey\u2014from the initial analysis through to concrete implementation. With packages that are clearly defined and start without hidden follow-up costs: <\/p>\n\n \ud83d\udc49 More about our Clean Core packages<\/a><\/p>\n\nWhat we have learned ourselves<\/h2>\n\n
How secat supports you<\/h2>\n\n
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