MS Dynamics AX 2009 has a very detailed information about inventory items; it gives a comprehensive information regarding stock which gives a clear vision about what in stock, what is reserved for customer or to be issued out, what is ordered from vendor or received in, and what have been posted or still in open transaction.
The below table descript the information in Items On hand form under Inventory Management->Common Forms->Item details->On hand button
Or
 it could be accessed through 
Sales Order/ Purchase Order/Inventory Movement/Production Order under Inventory button->On Hand



#
Label
Descriptio
Comment
1
Physical inventory
Total available quantities
2
Physical reserved
Quantities reserved in Sales Order
3
Available Physical
Available physical quantities for transactions
3 = 1 – 2
4
Ordered in total
Total quantities in open
Purchase Order
 (did not received yet)
5
Ordered reserved
Quantities reserved from Purchase Order (did not received yet)
6
Available for reservation
Quantities in open Purchase Orders
(did not received yet) available for reservation
6 = 3 + (4 – 5)
7
On order in total
Quantity in open Sales Order
(did not delivered yet)
8
Total Available
Net available physical quantities for transaction
8 = 6 – 7
9
Posted quantity
Quantities posted financially
10
Deducted
Quantities have physical packing list
updates in Sales Order
11
Picked
Quantities have picking list
update in Sales Order
12
Received
Quantities have physical updates
 in Purchase Order
13
Registered
Quantities have registered
 in Purchase Order
14
Physical cost amount
Amount posted in ledger physically
15
Financial cost amount
Amount posted in leader financially
16
Cost price
Item average cost