Field help (QTYSRH)

The Return quantity field is expressed in the return unit.
By default, the returned quantity is equal to the Expected return quantity. It can still be modified.

It corresponds to the actual quantity returned for the selected delivery, or the chosen supplier return. A control is applied against the Expected return quantity. It will not be possible to return a quantity that is greater than the expected quantity.
Provided that the Expected return quantity is not null, it is possible to enter a null Return quantity. This would mean recording an expected customer return event.

No stock receipt will be possible as long as the returned quantity has not been entered.