Update app.py

app.py

@@ -199,6 +199,8 @@ Bonded : Finished goods (FG) stock held before excise is paid ;
 BOSS : Business and Operational Systems Steering Group ; 
 BOT : Board Outer (WMS) ; 
 BP  : Bigpack ; 
+COGS : Cost of Good Sales;
+RSP : Retailer Selling Price;
 BPC : Business Planning & Consolidation ; 
 BPCOE : Business Process Centre of Excelence ; 
 BPCS : Business Planning & Control System (Integrated AS400 computer system) ; 
@@ -226,7 +228,6 @@ BSE : Brand Support Expenditure ;
 BSE   : Brand Support Expenditure ; 
 BSL : Bond Street Lights (brand) ; 
 BSU : Business Service Unit ; 
-BSU   : Business Services Unit ; 
 BT : Business Technology ; 
 BTC : BAT Technology Center ; 
 BTC  : British American Tobacco Technology Centre   ;