Data are stored in a column in this below format:
By this URL I can view the data sharepoint. https://URL.sharepoint.com/sites/Sitename/Lists/ListName/AllItems.aspx
Now I want to read the case ref no and create new case ref no. But not able to so. https://graph.microsoft.com/v1.0/sites/url.sharepoint.com:/sites/sitename:/lists/listname?expand=columns,items(expand=fields)
By using the URL I am able to see Desired Column name. Here is the output:
{
"columnGroup": "Custom Columns",
"description": "",
"displayName": "Case Ref",
"enforceUniqueValues": false,
"hidden": false,
"id": "82642ec8-ef9b-478f-acf9-31f7d45fbc31",
"indexed": false,
"name": "LinkTitle",
"readOnly": true,
"required": false
},
But I am not able to view column data (ie: case ref)
Did you change the default column "LinkTitle" display name to "Case Ref"?
I suggest you create a new column "Case Ref" and copy data to this column, rather than modify the default list columns.
Then you can use the Graph API below to get items.
https://graph.microsoft.com/v1.0/sites/xxx.sharepoint.com:/sites/team:/lists/TestGraph/items?expand=fields(select=id,Title,Case_x0020_Ref)