Software Update Manager (SUM)
When the system is ready and adapted for custom code of S/4HANA, then the next step is to run the SUM tool. The key functionals of the SUN tool is to handle these processes:
Post completion of the SUM updation the cross-application follow-on activities needs to be performed. The cross-application activities are needed even to make the UI changes during the conversion. If the conversion is from an SAP HANA database to a S/4HANA system then the database remains unchanged. Adding, removing, or moving fields and groups as part of the runtime adaptation for the smart forms or apps is part of the UI adaption.
The cross-application activities are
List of Application-Specific Follow-On Activities with SAP Cloud
In addition to the cross-application activities, the application-specific activities are also needed to be performed so that the simplification items relevant for the specific systems are successfully checked.
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