How to post record that have sublist like item in RESTlet? I try using this code, and it work well with customer record because I only need to input companyName and email, but when I try to input inventory adjustment, it always give an error

You must enter at least one line item for this transaction.

function post(context) {
         doValidation([context.recordtype], ['recordtype'], 'POST');
         var rec = record.create({
             type: context.recordtype
         });
         for (var fldName in context)
             if (context.hasOwnProperty(fldName))
                 if (fldName !== 'recordtype')
                     rec.setValue(fldName, context[fldName]);
         var recordId = rec.save();
         return String(recordId);
     }

So basically what NetSuite is telling you that you need to add at least one item on this record. Inventory Adjustment records adjust qty for INV items. There is no mean of creating one until you pass an item.

The issue you are facing may be related to the sublistId. You are looking for “inventory” (not “item”) I believe on an Inv Adj.

I try using this code

/**
 * @NApiVersion 2.0
 * @NScriptType Restlet
 * @NModuleScope SameAccount
 */

 define([
  'N/record',
], function(record) {
  function doPost(data){
  var recordObj = record.create({
      type: "inventoryadjustment",
      isDynamic: true
  });

  var account = data.account;
  var department = data.department;
  var adjlocation = data.adjlocation;
  var items = data.items;

  recordObj.setValue({
      fieldId:'account',
      value:account
  });

  recordObj.setValue({
    fieldId:'department',
    value:department
  });
  
  recordObj.setValue({
    fieldId:'adjlocation',
    value:adjlocation
  });


  for (i = 0; i < items.length; i++) {
  recordObj.selectNewLine({
      sublistId: 'item'
      });

      recordObj.setCurrentSublistValue({
      sublistId: 'item',
      fieldId: 'item',
      value: items[i][0]
      });

      recordObj.setCurrentSublistValue({
      sublistId: 'item',
      fieldId: 'quantity',
      value: items[i][1]
      });

      recordObj.commitLine({
      sublistId:'item'
      });
  }
      var recordId = recordObj.save({
          enableSourcing: false,
          ignoreMandatoryFields: false
          });

      return recordId;

  }
  return {post:doPost};
});

And get an error message :

{
    "error": {
        "code": "TypeError",
        "message": "TypeError: Cannot read property \'length\' of undefined [at Object.doPost (/SuiteScripts/restlet_invadj.js:37:19)]"
    }
}

data.items

is undefined. It is a normal JS error.

But I have defined it at above?