从父列表中访问创建的子记录。

子记录是在父记录的子列表中创建的。要访问子记录，可以使用以下步骤：

1. 获取对父记录的引用。
2. 获取子列表的子列表ID。
3. 使用子列表ID创建记录对象。
4. 使用记录对象访问子记录的字段。

以下示例代码演示了如何访问在父列表中创建的子记录：

/**
* Create a new child record and access its field
*/

//Get the current sales order record
var mySalesOrder = nlapiLoadRecord('salesorder', 1234);

//Get the internal ID of the first item on the Sales Order
var itemId = mySalesOrder.getLineItemValue('item', 'item', 1);

//Create a new Inventory Adjustment record
var adjustment = nlapiCreateRecord('inventoryadjustment');

//Set the subsidiary and location to match the sales order
adjustment.setFieldValue('subsidiary', mySalesOrder.getFieldValue('subsidiary'));
adjustment.setFieldValue('location', mySalesOrder.getFieldValue('location'));

//Add a new line item for the item on the sales order
adjustment.selectNewLineItem('inventory');
adjustment.setCurrentLineItemValue('inventory', 'item', itemId);
adjustment.setCurrentLineItemValue('inventory', 'adjustqtyby', -1);
adjustment.setCurrentLineItemValue('inventory', 'reason', 'Sales Order');
adjustment.commitLineItem('inventory');

//Save the new adjustment record
var adjustmentId = nlapiSubmitRecord(adjustment);

//Load the newly created child record
var adjustmentRecord = nlapiLoadRecord('inventoryadjustment', adjustmentId);

//Access a field on the child record
var quantity = adjustmentRecord.getLineItemValue('inventory', 'adjustqtyby', 1);

//Log the quantity value
nlapiLogExecution('DEBUG', 'Quantity', quantity);