Setting an Access Level 
Access level defines and controls the accessibility setting for objects.
In the Object Manager panel, under the General section, choose the level in the Access Level field.
Note
The access levels are:
Application
Objects can be accessed by all other objects under the particular application.
Superior Component
Objects can be accessed by other object belonging to the same superior component.
Top Component
Objects can be accessed by all other objects under the same top component.
SAP
Objects can be accessed by all other objects independent of the application component, superior component and top component from within any SAP systems.
Global
Objects can be accessed by all other objects independent of the application component, superior component and top component from any system outside SAP.