Forum Discussion

Copper Contributor

Feb 28, 2023

Updating Editor field on SharePoint Online using the CSOM with App Only Auth

I have the following issue. I work with CSOM and I want to update the Author and Editor field on a List Item object. The actual problem is that the Editor is not updated and the value is set to t...

Bronze Contributor

Feb 28, 2023

HI cristinadulau

you could try to set these fields using

item.systemUpdate()

instead of just "item.update()". The latter always creates a new version with the current user as the editor.

If you use the "ValidateUpdateListItem" Rest API then you have to set the "bNewDocumentUpdate” to true to perform a SystemUpdate, but i don't know how exactly you need to use that in the CSOM code above.

Best Regards,
Sven

cristinadulau

Copper Contributor

Mar 01, 2023

Hi SvenSieverding ,

Thank you for your response.

The signature of the ValidateUpdateListItem is the following one:

public IList<ListItemFormUpdateValue> ValidateUpdateListItem(IList<ListItemFormUpdateValue> formValues, bool bNewDocumentUpdate, string checkInComment);

When I am using it, I set the second parameter to true, but it still doesn't work.

I searched for SystemUpdate, but I cannot find it on Microsoft.SharePoint.Client.ListItem class.

Best regards,

Cristina

João Miguel
Copper Contributor
Nov 21, 2023
Did you managed to find the solution?
In my case the code works fine on a list but it doesn't work for another list similar to the first one.

PS: Found the culprit. The app didn't had full control.