Field help (LIKQTY4) 

Use this field to define the quantity of this component in the dispayed unit (field STU) that is needed to make the parent product.

Alternatively, leave blank to use a formula to calculate the component quantities (field Qty formula (field FORQTY)).

 You can only use a formula to calculate component quantities if you have used a formula to load the components (field Selection formula (field FORSEL)).