详细报错：

"type":"error.SuiteScriptError","name":"USER_ERROR","message":"在更改数量之后，您仍需要重新配置库存详细信息记录。"

"type":"error.SuiteScriptError","name":"USER_ERROR","message":"You still need to reconfigure the inventory detail record after changing the quantity."

原因：

SuiteAnswers ID 81448 的解答：
当系统启用了库存状态功能，访问子记录时会发生已添加行的行为，对新创建的库存详细信息子记录的子列表使用 selectNewLine 方法会返回错误“在更改数量之后，您仍需要重新配置库存详细信息记录” 。如果遇到此问题，建议使用 selectline 方法。

解决方案

var rec = record.transform({
  fromType: 'workorder',
  fromId: wordOrderId,
  toType: 'workordercompletion',
  isDynamic: true,
  defaultValues: {
    isbackflush: 'T'
  }
});

// 正文字段赋值
rec.setValue('trandate', new Date());
/** 其他正文字段赋值 **/

// 行字段赋值
var sublistId = 'component';
var lineCounts = rec.getLineCount(sublistId);
for (var i = 0; i < lineCounts; i++) {
  rec.selectLine({
    sublistId: sublistId,
    line: i
  });
  rec.setCurrentSublistValue({
    sublistId: sublistId,
    fieldId: 'quantity',
    value: lineData[i].qty,
  });
  var subRec = rec.getCurrentSublistSubrecord({
    sublistId: sublistId,
    fieldId: 'componentinventorydetail',
  });
  var detailData = lineData[i].details;
  var detailSublistId = 'inventoryassignment';
  for (var j = 0; j < detailData.length; j++) {
	// 根据SuiteAnswers的解答，因为启用了库存状态功能，此处需要使用selectLine方法，并非selectNewLine方法
    // subRec.selectNewLine({sublistId: detailSublistId});
    subRec.selectLine({sublistId: detailSublistId,line:j});
    subRec.setCurrentSublistText({
      sublistId: detailSublistId,
      fieldId: 'issueinventorynumber',
      text: detailData[j].invNum,
    });
    subRec.setCurrentSublistValue({
      sublistId: detailSublistId,
      fieldId: 'binnumber',
      value: detailData[j].binNum,
    });
    subRec.setCurrentSublistValue({
      sublistId: detailSublistId,
      fieldId: 'inventorystatus',
      value: detailData[j].status,
    });
    subRec.setCurrentSublistValue({
      sublistId: detailSublistId,
      fieldId: 'quantity',
      value: detailData[j].quantity,
    });
    subRec.commitLine({
      sublistId: detailSublistId
    });
  }
  rec.commitLine({
    sublistId: sublistId
  });
}

rec.save();

另外，根据实际测试，使用标准模式创建完工单也可以避免该报错。

var rec = record.transform({
  fromType: 'workorder',
  fromId: wordOrderId,
  toType: 'workordercompletion',
  isDynamic: false,
  defaultValues: {
    isbackflush: 'T'
  }
});

// 正文字段赋值
rec.setValue('trandate', new Date());
/** 其他正文字段赋值 **/

// 行字段赋值
var sublistId = 'component';
var lineCounts = rec.getLineCount(sublistId);
for (var i = 0; i < lineCounts; i++) {
  rec.setSublistValue({
    sublistId: sublistId,
    fieldId: 'quantity',
    value: lineData[i].qty,
    line: i
  });
  var subRec = rec.getSublistSubrecord({
    sublistId: sublistId,
    fieldId: 'componentinventorydetail',
    line: i
  });
  var detailData = lineData[i].details;
  var detailSublistId = 'inventoryassignment';
  for (var j = 0; j < detailData.length; j++) {
	// 标准模式下，给issueinventorynumber赋值时，建议使用setSublistValue方法，而非setSublistText方法
   // 原因：当系统中存在不同物料但库存编码相同时，此处可能发生USER_ERROR的错误，此类错误较难排查
    subRec.setSublistValue({
      sublistId: detailSublistId,
      fieldId: 'issueinventorynumber',
      value: detailData[j].invNumId,
	  line: j
    });
    subRec.setSublistValue({
      sublistId: detailSublistId,
      fieldId: 'binnumber',
      value: detailData[j].binNum,
	  line: j
    });
    subRec.setSublistValue({
      sublistId: detailSublistId,
      fieldId: 'inventorystatus',
      value: detailData[j].status,
	  line: j
    });
    subRec.setSublistValue({
      sublistId: detailSublistId,
      fieldId: 'quantity',
      value: detailData[j].quantity,
	  line: j
    });
  }
}

rec.save();

其他参考答案：

• Resolve Error: "You still need to reconfigure the inventory detail record after changing the quantity."
• Unable to set Inventory Detail on Item Fulfillment Record - Suitescript 2
• Netsuite reconfigure inventory detail error