indent module is used to track the internal request for the product issue.

in openerpv7 indent module allows a uses to generate request.

the warehouse manager check the availability for that certain product.

if the product is not present in sufficient quantity then openerp will automatically generate PO for the same prodcut with same quantity (supplier should be per defined ).

and on the arrival of the product state changed to receive.

and the stock move is done.

you can also view stock move from warehouse menu warehouse->Traceability->stock move

hope this is helpful