You can view and edit the visible POD properties on an order via the Order Details view. First select the order item in the left pane, then select View > Provisioning in the drop down menu in the right pane.
Required POD properties, for example NodeName, Shelf and Card are marked with a special character.
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This character indicates the data is required prior to submitting the provisioning request, even if the data is not necessarily required to submit the order.