Field help (QTYPUUSCO) 

This mandatory field is used to specify the quantity in purchase unit.

When entering a subcontract order and depending on the entry transaction used, a window can automatically open to suggest taking into account the requirements. A date can be entered to limit the suggestions in time. This date will be applied by default to the requirement end date, but it can be applied to the requirement start date according to the Requirement selection section.
Click Criteria to specify sorting criteria and additional selection criteria, including the entry of ranges related to the project code, document or original document.
Click Include all to automatically preload the quantity taken into account on each line.
Click Exclude all to reset the selected quantity to zero. If there is a minimum quantity in the product-supplier record for the considered product, this quantity is suggested for the selected quantity, even if it is greater than the requirement quantity. A blocking message prohibits the entry of a quantity inferior to this minimum quantity.

If you do not want to take into account the requirements, exit this window to return to the line entry.