Quantity replenishment is one of the options to calculate quantities to include on a purchase order. A good way to think of quantity replenishment is to “re-order what has been sold since the last time a PO was done for this product”.
Each lens item tracks the quantity of lenses used since the last time the lens was ordered. This can be seen on the “Display Extras” screen in the inventory screen:
The “Current usage” number shows the number of lenses allocated to an order since the last time this specific lens was ordered on a purchase order.
When a purchase order is generated using Quantity Replenishment for an item, the quantity in the “Current Usage” is used as the suggested order quantity, and the “Current Usage” for the item set to 0.
For example, consider the following lens:
When a PO is generated, the order shows:
As soon as the PO is created, the “Current Usage” is changed to 0:
If this PO is deleted, without being released and ordered, the user will be prompted:
Normally, the response to this question will be “Yes”, since the lenses will be ordered again on the next PO that is generated for this vendor.
The Current Usage is updated under the following conditions:
when an order is created and a lens selected
when an order is updated and a different lens selected - the original lens is deducted from Current Usage, and the new lens incremented
when a breakage is done on an order
when an order is deleted
For unvalid orders, the “Current Usage” can be updated (or not) based on the following parameter on the Inventory tab in System Settings:
