SAP S/4HANA
What is Key-User Extensibility?
Low-code tools in Fiori that let business experts add custom fields, logic, and CDS views without classic development.
Key-user apps such as Custom Fields, Custom Logic, and Custom CDS Views are the primary extension option in S/4HANA Cloud Public Edition and are also available on-premise. Changes are transported via adaptation transport or software collections. They count as clean core level A but must still be tested like any change.
Related terms
Clean Core
SAP's principle of keeping ERP code and configuration close to standard, with extensions built only through stable, released interfaces.
Developer Extensibility
On-stack extensibility where developers use ABAP Cloud in the S/4HANA system itself, restricted to released objects.
Side-by-Side Extensibility
Building extensions on SAP BTP that interact with S/4HANA through released APIs and events rather than inside the ERP.
Custom Fields and Logic
S/4HANA Fiori apps that let key users add fields to business contexts and implement cloud BAdIs in a restricted ABAP language.
More in SAP S/4HANA
Planning an S/4HANA move?
Read the field guides on testing an ECC to S/4HANA migration and grab the free template library.