In OpenERP, we already have a list of product quantities that is Quantity on Hand, Forcasted Quantity but it actual shows total quantity available in all our warehouse.
But let suppose if we have to check warehouse wise quantity then we have to check manually. And here we have implemented a module which helps us to get the warehouse wise product quantity.
Here is the list of the available warehouse in our database for example.
Below is the product form which shows total quantity available.
In following screen, we can see that we have added an image field at the last column and when we click on that, one popup will open and that will display all warehouse and quantity for that particular product.
The same thing is possible in Sales Order/Quotation, Purchase Order form also if we want to know the quantity during sales or purchase.
So here is the flow that how we can maintain and check product quantities during sales, purchase and overall.