SAP Clean Core Score
Measure the future-readiness of your SAP ERP. Calculate compliance with official SAP Clean Core guidelines and predict your TCO savings.
The SAP Clean Core Score is a KPI that measures the degree of decoupling between custom code extensions and the standard ERP core. Calculated with deterministic static analysis (token- and rule-based) of the code and its data dependencies, the score weights direct database modifications, calls to unreleased APIs, and key-user extensibility. A high score (closer to 100%) indicates modular code that supports upgrade readiness assessment, simplifies maintenance, and can meaningfully reduce the Total Cost of Ownership (TCO) of custom code over time.
What is the Clean Core Score?
The SAP Clean Core Score is the key metric (KPI) for assessing the degree of decoupling of customer-specific ABAP modifications. On a scale of 0% (fully modified legacy system) to 100% (standard ERP without modifications), it indicates how smoothly your system can be upgraded.
By maintaining a "clean core," companies ensure that core processes remain stable, while innovations are realized side-by-side on the SAP Business Technology Platform (BTP) or in-app via released interfaces.
The Calculation Basis of the KPI
Our analysis algorithm evaluates uploaded custom code projects based on four key pillars:
API & Interface Release
Checks whether the SAP APIs and Data Dictionary objects used are officially released by SAP for cloud extensions.
Degree of Coupling
Measures how strongly custom tables and business processes are interwoven with SAP ERP modules.
Modern ABAP Cloud
Validates the usage of modern ABAP Cloud syntax (RAP Model) instead of outdated legacy ABAP reports.
TCO Optimization Potential
Calculates the reduction in testing and development costs for future system upgrades.
Benefits at a Glance
- Clear KPI for IT management
- Benchmarking against SAP best practices
- Identification of critical couplings
- Less regression testing through decoupling
Frequently Asked Questions (FAQ)
What does a Clean Core Score of 100% mean?
A score of 100% indicates that all analyzed customer-specific extensions align with SAP's published Clean Core guidelines. This means in-app modifications only run through released key-user apps, and side-by-side BTP extensions communicate via SAP-released interfaces. On these criteria the analyzed extensions are well-positioned for upgrades — subject to your own testing and validation.
How are the Clean Core Score and TCO connected?
The lower the Clean Core Score, the higher the ongoing operating costs (Total Cost of Ownership, TCO). Modifications must be extensively re-tested and corrected for each SAP Support Package. A high score dramatically minimizes this testing effort.