SharePoint Rest API modify "who modified by" and security classification using OAuth token postman

Question

I am working with SharePoint rest API calls, I have client ID and token using them I can generate OAuth token, using OAuth token I am able to upload files.

but when upload the file how can I update who last modified by and file security classification using SharePoint Rest API calls.

while file upload set modified by and security classification

file upload example :https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins/upload-a-file-by-using-the-rest-api-and-jquery

Answer 1

Hi @Nagavalli Puli ,

Based on my research and testing, there is no way to change the modified by and security classification at the same time as uploading the file. As a workaround, you can use the following REST API to change the modified by and security classification after uploading the file:

_api/web/lists/getByTitle('listname')/items(itemid)/ValidateUpdateListItem  

Body:

 {  
    "formValues":[  
       {  
          "FieldName":"Editor",  
          "FieldValue":"[{'Key':'i:0#.f|membership|xxx@xxxxx.onmicrosoft.com'}]"  
       }  
      
    ]  
 }  

My test:

Upload file: _api/web/GetFolderByServerRelativeUrl('/sites/xxxx/526')/Files/add(url='FullCode.txt',overwrite=true)

Update Modified by: _api/web/lists/getByTitle('5.26')/items(8)/ValidateUpdateListItem

Test result:

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Answer 2

Hi @Tong Zhang_MSFT Thank you for your support.

I have a property security classification, its a dropdown with multiple values, how can i update that.

Answer 3

I am getting 400 bad request with API _api/web/lists/getByTitle('listname')/items(itemid)/ValidateUpdateListItem, can you suggest using relative path how can i modify.

example using relative path i can read the file properties.

Answer 4

@Tong Zhang_MSFT I am not able to update using the relative path could you please help me with this.

please see the error screenshot.