for (j = 0; j < itemInfo.serials.length; j++) {

                    inventoryDetailRecord.setSublistValue({
                        sublistId: 'inventoryassignment',
                        fieldId: 'receiptinventorynumber',
                        line: j,
                        value: itemInfo.serials[j]
                    });

                    inventoryDetailRecord.setSublistValue({
                        sublistId: 'inventoryassignment',
                        fieldId: 'quantity',
                        line: j,
                        value: 1
                    });
                }