Hi Deepthi,
I got another idea how you might be able to work without using Excel logic.
You could just create a restricted Key Figure based on KF Net Value:
You now can select in the report al Customers who have ordered within a specific timeframe and in the Column "Net Value Last 6 Month" you see who of the cusotmers have also ordered within the last 6 month. Or the other way around: all customers who do not have an entry in the Second Key Figure Column have not ordered in the last 6 month.
Maybe this is an option for you if you want to stay in the system without using Microsoft Excel.
Best regards
Henriette