Hi Kissendra,
There may be other ways, but one way a purchase order release can become voided is if a user closes it manually without receiving. Yours looks like it might’ve been a partial receipt and then a user closed the release. If you have change log turned on for the PO release records and you are tracking when a PO release is closed and voided, it would look like below. Here is where you can see the date / time/ and personnel who closed / voided it.
One other thing, I am not sure, perhaps someone else here can clarify or you can test out - if on receipt a user clicks received complete for a partial receipt, does system close the release leaving quantity on there/void?
Nancy