The units of measure you select for Purchase and Sales are what will be shown by default whenever you add the current item to a purchase form or sales form. You can change these default units when filling out the form.
The unit of measure you select for Shipping is what will always be shown on pick lists, regardless of what unit is shown on the purchase order. The person printing a pick list cannot change this unit of measure. It can only be changed by changing the Shipping unit setting.
To do this task
Click the Purchase drop-down arrow and then click a default unit of measure for purchase forms.
Click the Sales drop-down arrow and then click a default
unit of measure for sales forms.
(Optional) Click the Shipping drop-down arrow and then click a unit of measure for pick lists.