The debate about clean core in the context of enterprise AI has a different shape than the traditional clean core conversation. The traditional argument was about total cost of ownership — the cost of maintaining custom code, the cost of upgrades delayed by non-standard extensions, the cost of incidents caused by dependencies that nobody fully documented. These are real costs, but they are abstract enough that most organisations deferred the clean core investment in favour of stability and continuity.

The AI argument is not abstract. It is operational. AI agents, copilots, and intelligent automation tools that are deployed against a customised ERP landscape encounter specific, measurable failure modes that do not appear in clean core environments. Data field mappings that are non-standard produce AI outputs that require human validation before they can be acted on, eliminating the automation value. Custom approval workflows that sit outside standard SAP process logic are invisible to AI process agents, creating exceptions that require manual routing. Non-standard document types that exist only in custom tables cannot be consumed by AI tools that expect standard SAP object structures.

On the other side, the organisations that have deferred clean core investments are not without a legitimate position. Achieving clean core in a large, complex SAP landscape is a multi-year programme. It requires business engagement, process redesign, and a level of executive sponsorship that is difficult to sustain across a technology initiative that delivers no visible business functionality. The argument that organisations should accept reduced AI performance in the short term rather than commit to a transformation they cannot resource is not irrational — it is the real constraint that most enterprise technology leaders are operating within.

The resolution of this debate requires a sequencing framework: which clean core improvements deliver the highest AI performance gain per unit of implementation effort, and how to sequence the clean core programme to unlock AI value progressively rather than requiring the full transformation before any intelligent automation can be deployed.

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