A Pending Hold is a Hold that has been placed by a Patron that has not been "Filled". Where Filled means that the item is now ready for the Patron to pick up.
This report indicates all the items that have Holds on them that are currently held on the library shelves or stack.
Locate the Item on the shelf and then in Circulation, scan or enter the barcode of the item to Check In the item. The item has now been "seen" by Koha and the status has changed. The item will now appear on the "Holds Awaiting Pickup" report.
TIP: This report is only applicable if the ReserveNeedReturn system preference is on.