There are many ways to create an Inventory Shipment from Sales Order.

• From Sales module > Sales Orders> click Ship.

• From New Inventory Shipment > select Sales Order in the Order Type field > select the Customer with open Sales Order > the Add Orders screen will automatically be opened > select the Sales Order and click Open Selected.

• From existing Inventory Shipment where Order Type of Sales Order and Customer selected has open Sales Order > click Add Orders > Add Orders screen will be opened > select the Sales Order and click Open Selected.

Here is the sales order added to the Inventory Shipment.