VALID_LINE_ITEM_REQD when transform from Sales Order to Item Fulfillment

You must have at least one valid line item for this transaction error will stop us from creating an item fulfillment from a sales order at the stage of record.transform() if we did not specify an inventoryLocation in the defaultValue parameter.

Here is a working suitelet code which creates an item fulfillment via record.transform(). You may replace ids with yours and remove the inventorydetail part if you don’t need it

如果我们在初始化阶段不填写库存位置信息，”您必须让此事务处理拥有至少一个有效的行项目“这个错误会直接在record.transform()阶段直接弹出，阻止我们从销售订单创建货品履行。

附上一个suitelet的代码，用于通过record.transform()创建货品履行。你可能需要替换id，如果不需要库存编号那段代码请自行移除。

/**
 * @NApiVersion 2.1
 * @NScriptType Suitelet
 */
define(['N/record'],

  (record) => {
    const onRequest = (scriptContext) => {

      let ifRecObj = record.transform({
        fromType: 'salesorder',
        fromId: 111111, //your sales order id
        toType: 'itemfulfillment',
        isDynamic: true,
        defaultValues:{
            inventorylocation: 2222 //your location id
        }
      });
      for (let i = 0; i < 1; i++) {
        ifRecObj.selectLine({ sublistId: 'item', line: i });
        ifRecObj.setCurrentSublistValue({ sublistId: 'item', fieldId: 'quantity', value: 1 });
        //inventory detail start
        let invDetailRecObj = ifRecObj.getCurrentSublistSubrecord({
            sublistId: 'item',
            fieldId: 'inventorydetail'
        });
        invDetailRecObj.selectLine({
            sublistId: 'inventoryassignment',
            line: 0
        });
        invDetailRecObj.setCurrentSublistValue({
            sublistId: 'inventoryassignment',
            fieldId: 'issueinventorynumber',
            value: 3333 //your inventory detail id
        });
        invDetailRecObj.setCurrentSublistValue({
            sublistId: 'inventoryassignment',
            fieldId: 'quantity',
            value: 1
        });
        invDetailRecObj.commitLine({
            sublistId: 'inventoryassignment',
        });
        //inventory detail end
        ifRecObj.commitLine({ sublistId: 'item' });
      }

      const ifRecordId = ifRecObj.save({ enableSourcing: true, ignoreMandatoryFields: false });
    }

    return { onRequest }

  });