QuickBooks在线API：用于创建账单的行项目

I am using the following code for bill creation in QuickBooks online.

// Prep Data Services
$dataService = DataService::Configure(array(
    'auth_mode' => 'oauth2',
    'ClientID' => "Q0fXL014zAv3wzmlhwXMEHTrKepfAshCRjztEu58ZokzCD5T7D",
    'ClientSecret' => "stfnZfuSZUDay6cJSWtvQ9HkWiKFbcI9YuBTET5P",
    'accessTokenKey' =>
    'eyJlbmMiOiJBMTI4Q0JDLUhTMjU2IiwiYWxnIjoiZGlyIn0..37nFpM9YGugRpmZrNQLEYA.3Y6BM-X1k_0EUbBUFAWwXq9y46ZONCZ40sCUHTMmYc93Qf5c2ytcP8Q3ZFrSe9yBK6xGZ4J9VeMyh2QqgWFLrNyz3mqd9fShfgXZRS_kxCMEDZ-m94YS89F8xOP4smIVztlv7bucqj8osDKC52YJC1gi_P7SJoW3uSXOwwhHUARcWnyHsR7Upz4DJ8-yO0n7JWipiHBKdDagMygBIb6GtJ1244jgwE9vND4HiALkCBYrhsh4qWrXyBWKXB_4UWsM-QAIl-YCNszWp6VxFNn4Cyh-kOUNxgHpe9pa5Rt6DbcF6WD_T0MYR8S5srEIs7BisEwY7xstXJbIY_U8qIOZh9LwsQAsaXulJuWl7I4xWQ0yK5H6EEsksa3ZoaS_xeZE1KrHvMbKjHu3diDGAQFgJ9_uRjJWDElh7JT1t56HHCqkpYeNXY6oAXipqTf2Y1DZDlho6lRLBT6ss38XKEJ8aFpI5V3JbyziiVaFbhqPOIi-MD69JK7ItFhsnt2QZkdYZIqBhq1LeeCtmD6lXJSQtyqk3eghBX1uWbeCx4ue4UbyvkhD1QNY4yFqhCIXwPkcCkiDdry8YbchYnmrJ9eh7DU85H5r0YZOewAWYpQ9y_u6QHRdNNr0Otd6mXL7zpDZliQB65czbR479QmYjHqSBmpMwUn3LrvELxrQz2Wyib8fwyA_xQYTJr3w0pUiCtT_.fhIAms_p2AstZBBW6KIkhQ',
    'refreshTokenKey' => "L011530994357pUIdF4rZSpMC5XCZ2TV4ypu4pOpfen4VRvYzl",
    'QBORealmID' => "193514611894164",
    'baseUrl' => "Development"
));
$dataService->setLogLocation("/Users/hlu2/Desktop/newFolderForLog");
$dataService->throwExceptionOnError(true);
//Add a new Vendor
$theResourceObj = Bill::create([
    "Line" =>
    [
        [
            "Id" => "1",
            "Amount" => 200.00,
            "DetailType" => "AccountBasedExpenseLineDetail",
            "AccountBasedExpenseLineDetail" =>
            [
                "AccountRef" =>
                [
                    "value" => "7"
                ]
            ]
        ]
    ],
    "VendorRef" =>
    [
        "value" =>"56"
    ]
]);

The above code creates bill against the vendor, but I need to add the line items for the bill as well. I copied the below code from Invoice create for line item creation.

"Line" => [
   [
     "Amount" => 100.00,
     "DetailType" => "SalesItemLineDetail",
     "SalesItemLineDetail" => [
       "ItemRef" => [
         "value" => 20,
         "name" => "Hours"
        ]
      ]
      ]
    ]

I am getting the following error when the above code is added.

Required param missing, need to supply the required value for the APIRequired parameter Line.DetailType is missing in the request

What change has to be made on the line item code to make this work?