We have at our disposal the notion of physical inventory (based on packages and receipts) and accounting inventory (sales and purchase orders).
Inventory manages 3 statuses of Stocks:
1. Stock on hand
2. Committed stock
3. Available for sale
Stock Available for sale = Stock on hand - Committed Stock
Estimates have no impact on the stock. For an Estimate to be taken into account in the Committed stock, it must:
- be accepted by the customer
- converted into a confirmed Sales Order
The physical stock is impacted when the package is created.
When the customer pays his Retainer Invoice, it must be posted as a payment on the invoice linked to the Sales Order.
The "package preparer" can consult the list of Sales Orders. The white, semi-green or green dot in the invoice column shows him which Sales Orders can be sent (see screenshot in the appendix).

Accounting: the management account is satisfied with the inventory Accounting Stock and the adjustments made. The Books & Inventory programs are adjusted to each other.