The SQL Query to Find the On Hand Quantity :-
SELECT  
MOQ.ORGANIZATION_ID,
                 
MSI.SEGMENT1 "ITEM NAME #",    
                 
MSI.DESCRIPTION "ITEM DESC #",
                 
SUM (MOQ.TRANSACTION_QUANTITY)
FROM      APPS.MTL_ONHAND_QUANTITIES MOQ,
                 
INV.MTL_SYSTEM_ITEMS_B MSI
WHERE 
MSI.INVENTORY_ITEM_ID   =
MOQ.INVENTORY_ITEM_ID (+)
AND       
MSI.ORGANIZATION_ID     =
MOQ.ORGANIZATION_ID (+)
AND       
MOQ.ORGANIZATION_ID    = 122 
AND       
MSI.SEGMENT1 IN (
'AIRSET-P',
'AIRSETMTGKIT-P')
GROUP BY MOQ.ORGANIZATION_ID, MSI.SEGMENT1
,  MSI.DESCRIPTION 
UNION
SELECT 
MMT.ORGANIZATION_ID,
                
MSI.SEGMENT1 "ITEM NAME #",    
                
MSI.DESCRIPTION "ITEM DESC #",
                
SUM (MMT.TRANSACTION_QUANTITY)
FROM   
APPS.MTL_MATERIAL_TRANSACTIONS MMT,
               
INV.MTL_SYSTEM_ITEMS_B MSI
WHERE 
MSI.INVENTORY_ITEM_ID   =
MMT.INVENTORY_ITEM_ID (+)
AND      
MSI.ORGANIZATION_ID     = MMT.ORGANIZATION_ID
(+)
AND      
MMT.ORGANIZATION_ID    = 122 
AND      
MSI.SEGMENT1 IN (
'AIRSET-P',
'AIRSETMTGKIT-P'
)
GROUP BY MMT.ORGANIZATION_ID, MSI.SEGMENT1
,  MSI.DESCRIPTION