function deleteExistingRecords() {
            var customSearch = search.load({id:‘customsearch_custrecord_qty_on_hand’});
            customSearch.run().each(function(result) {
                var deletedRecord = record.delete({
                    type: ‘customrecord_qty_on_hand_item_receipt’,
                    id: result.id
                });
                return true;
            });
        }