K2 is not returning the SharePoint list column value using swagger

[DR06]

Hi,

My goal is to display the SharePoint online list item to my K2 smartform.
for that I am using REST service broker and that broker requires "Swagger descriptor file".

So I created the API for fetching the SharePoint online list item using Microsoft graph and created the swagger file from it.

While testing I am getting the proper HTTP response as 200 but its not returning me any column value.

I am pasting my swagger file and the response from the API when I tested from POSTMAN for your reference

Swagger descriptor:

{
"swagger": "2.0",
"info": {
"version": "v1",
"title": "Microsoft Graph - Example"
},
"host": "graph.microsoft.com",
"schemes": [
"https"
],

"/beta/SharePoint/sites/e5a8b628-7deb-4250-bddc-6188951e7562,df669d0a-2a06-4c1c-8abe-d80a92d4c377/lists/e618e01c-f44d-485f-be21-f42ea593198d/items?expand=ColumnSet": {
  "get": {
    "tags": [
      "LoadList"
    ],
    "operationId": "LoadList",
    "consumes": [ ],
    "produces": [
      "application/json"
    ],
    "parameters": [ ],
    "responses": {
      "200": {
        "description": "Success",
        "schema": {
          "$ref": "#/definitions/ListData"
        }
      }
    }
  }
}

},
"definitions": {
"Object": {
"type": "object",
"properties": { }
},

"ListData": {
  "type": "object",
  "properties": {
    "Title": {
      "type": "string"
  
}
  }
  }

}

}

and here is the response of the API from POSTMAN

{
"@odata.context": "https://graph.microsoft.com/beta/$metadata#sharePoint/sites('e5a8b628-7deb-4250-bddc-6188951e7562%2Cdf669d0a-2a06-4c1c-8abe-d80a92d4c377')/lists('e618e01c-f44d-485f-be21-f42ea593198d')/items",
"value": [
{
"@odata.etag": ""01981ee2-d0dd-4558-aba1-5d329d78f182,2"",
"createdBy": {
"user": {
"id": "3d14e513-cd99-4d7c-b74f-27eeae4a424d",
"displayName": "Divya Raj"
}
},
"createdDateTime": "2017-03-28T10:12:56Z",
"eTag": "01981ee2-d0dd-4558-aba1-5d329d78f182,2",
"id": "01981ee2-d0dd-4558-aba1-5d329d78f182",
"lastModifiedBy": {
"user": {
"id": "3d14e513-cd99-4d7c-b74f-27eeae4a424d",
"displayName": "Divya Raj"
}
},
"lastModifiedDateTime": "2017-03-30T04:58:54Z",
"webUrl": "https://trelleborg.sharepoint.com/sites/development/DivyaRaj/Lists/Change%20Requests/1_.000",
"listItemId": 1,
"columnSet@odata.context": "https://graph.microsoft.com/beta/$metadata#sharePoint/sites('e5a8b628-7deb-4250-bddc-6188951e7562%2Cdf669d0a-2a06-4c1c-8abe-d80a92d4c377')/lists('e618e01c-f44d-485f-be21-f42ea593198d')/items('01981ee2-d0dd-4558-aba1-5d329d78f182')/columnSet/$entity",
"columnSet": {
"Title": "Test1",
"k5x4": "Divya Raj",
"lavb": "Problem statement test 1",
"LinkTitleNoMenu": "Test1",
"LinkTitle": "Test1",
"Author": "Divya Raj",
"AuthorId": 42,
"Modified": "2017-03-30T04:58:54-07:00",
"id": "1",
"Editor": "Divya Raj",
"EditorId": 42,
"Created": "2017-03-28T10:12:56-07:00",
"Attachments": false,
"ContentType": "Item",
"Edit": "",
"UIVersionString": "1.0",
"ItemChildCount": "0",
"FolderChildCount": "0"
}
},
{
"@odata.etag": ""2c1b0d2a-6bc3-40c1-8652-6c87248173df,2"",
"createdBy": {
"user": {
"id": "3d14e513-cd99-4d7c-b74f-27eeae4a424d",
"displayName": "Divya Raj"
}
},
"createdDateTime": "2017-03-28T10:13:27Z",
"eTag": "2c1b0d2a-6bc3-40c1-8652-6c87248173df,2",
"id": "2c1b0d2a-6bc3-40c1-8652-6c87248173df",
"lastModifiedBy": {
"user": {
"id": "3d14e513-cd99-4d7c-b74f-27eeae4a424d",
"displayName": "Divya Raj"
}
},
"lastModifiedDateTime": "2017-03-30T04:59:06Z",
"webUrl": "https://trelleborg.sharepoint.com/sites/development/DivyaRaj/Lists/Change%20Requests/2.000",
"listItemId": 2,
"columnSet@odata.context": "https://graph.microsoft.com/beta/$metadata#sharePoint/sites('e5a8b628-7deb-4250-bddc-6188951e7562%2Cdf669d0a-2a06-4c1c-8abe-d80a92d4c377')/lists('e618e01c-f44d-485f-be21-f42ea593198d')/items('2c1b0d2a-6bc3-40c1-8652-6c87248173df')/columnSet/$entity",
"columnSet": {
"Title": "Test2",
"k5x4": "Anand Patil",
"lavb": "Problem Statement test 2",
"LinkTitleNoMenu": "Test2",
"LinkTitle": "Test2",
"Author": "Divya Raj",
"AuthorId": 42,
"Modified": "2017-03-30T04:59:06-07:00",
"id": "2",
"Editor": "Divya Raj",
"EditorId": 42,
"Created": "2017-03-28T10:13:27-07:00",
"Attachments": false,
"ContentType": "Item",
"Edit": "",
"UIVersionString": "1.0",
"ItemChildCount": "0",
"FolderChildCount": "0"
}
},
{
"@odata.etag": ""7cca1ff9-db25-4ea8-a196-f3d792954f9b,2"",
"createdBy": {
"user": {
"id": "3d14e513-cd99-4d7c-b74f-27eeae4a424d",
"displayName": "Divya Raj"
}
},
"createdDateTime": "2017-03-28T11:55:19Z",
"eTag": "7cca1ff9-db25-4ea8-a196-f3d792954f9b,2",
"id": "7cca1ff9-db25-4ea8-a196-f3d792954f9b",
"lastModifiedBy": {
"user": {
"id": "3d14e513-cd99-4d7c-b74f-27eeae4a424d",
"displayName": "Divya Raj"
}
},
"lastModifiedDateTime": "2017-03-30T04:59:41Z",
"webUrl": "https://trelleborg.sharepoint.com/sites/development/DivyaRaj/Lists/Change%20Requests/3.000",
"listItemId": 3,
"columnSet@odata.context": "https://graph.microsoft.com/beta/$metadata#sharePoint/sites('e5a8b628-7deb-4250-bddc-6188951e7562%2Cdf669d0a-2a06-4c1c-8abe-d80a92d4c377')/lists('e618e01c-f44d-485f-be21-f42ea593198d')/items('7cca1ff9-db25-4ea8-a196-f3d792954f9b')/columnSet/$entity",
"columnSet": {
"Title": "Test3",
"k5x4": "Dino",
"lavb": "Problem Statement test 3",
"LinkTitleNoMenu": "Test3",
"LinkTitle": "Test3",
"Author": "Divya Raj",
"AuthorId": 42,
"Modified": "2017-03-30T04:59:41-07:00",
"id": "3",
"Editor": "Divya Raj",
"EditorId": 42,
"Created": "2017-03-28T11:55:19-07:00",
"Attachments": false,
"ContentType": "Item",
"Edit": "",
"_UIVersionString": "1.0",
"ItemChildCount": "0",
"FolderChildCount": "0"
}
}
]
}

---

Looking for some help over here.

Thanks