SAP provides new features and enhancements for the existing SAP 
installations in self-contained units called business functions. These functions can be used for various business processes, they can be switched on or off based on the processes.

The activation of the business function cannot be undone.
KTern automates the process of analyzing business functions. After
 connecting the system, KTern runs the business functions analytics 
check and automatically classifies the installed business functions into
 active and inactive business functions.
Business Function Analysis
KTern makes this entire process simple by identifying the state of
 the business functions in SAP ECC and analyzing whether the functions 
are compatible with S/4HANA or not.
1. Navigation
Access KTern's Digital Maps Cockpit and select process Assessment.
2. Business Function Analysis
2.1 Overview List
The platform provide the list of business functions related to the SAP system on the Digital Maps cockpit.
2.2 Insights
To get a deeper insight select the "rocket" action button.
The platform further provides a brief on the business functions which are present in the system as :
1. The total number of business functions
2. The number of active business functions
3. The number of business functions whose compatibility has to be reviewed.
KTern also classifies the business functions into the following types:
Enterprise Extensions: These are the type of 
business functions which activate industry-independent and 
industry-specific applications and business processes.
Enterprise Business Functions: They can activate 
special features in SAP S/4HANA. They contain both industry-specific and
 industry-independent enterprise business functions.
Industry Business Functions: They contain functions specific to a particular industry and are part of the industry business function sets.
KTern’s Business Function Analytics feature analyzes all the 
business functions installed in an ECC system in the Discover phase 
itself. It then classifies them into active and inactive business 
functions. The main objective of this feature is to analyze the impact 
of migrating these active business functions to S/4HANA.