How to Manage Purchasing through Viability.
Viability has the the capability to track your Purchasing against your target metric range. It is important to enter your orders on a regular basis, as they are made. Invoices are then cross-referenced at a later date.
There is an option to populate an order with Stock (Data Entry).
The other option is to keep it to a simple order Value (Totals).
Orders are tracked to your Metrics and Budgets.
How to use Purchasing Budget.