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HTTP Post Not working , it doesn't keep Modified from being updated

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Posted on by subsguts

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Please help. The following is supposed to update a field in a SharePoint list without updating the Modified field, yet this doesn't work for me. There have been other posts that say this is the way to do this. Please let me know what is wrong. Thank you!

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lbendlin 8,474 Super User 2025 Season 2 on at

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Define "not working"

Looks like there are some recommended/mandatory headers.

Solved: Sharepoint Post Request - ValidateUpdateListItem - Power Platform Community (microsoft.com)

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subsguts 1,259 Moderator on at

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It always changes the Modified column in the SharePoint List. By using the POST you are supposed to be able to avoid this from happening. I want to update a new field in the list without affecting the Modified and Modified By historical information.

Note: I have tried bNewDocumentUpdate:true and bNewDocumentUpdate:false and either way it still changes the Modified when I do this and the documentation says it shouldn't.

Adding headers, which I have done, doesn't make a difference. The update is happening, so that means the POST is working, but it isn't supposed to change the Modified date, which is the issue that I cannot figure out. It's like Microsoft has changed the way this works unless someone here can explain to me what the issue might be?

Thank you

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subsguts 1,259 Moderator on at

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I now stand corrected, in that someone has figured out how to update without making changes to the Modified By, Modified, etc.

The article is below and I have tested this and it appears to be working. The difference between what is posted here and what others have done is that this updates the fields like Modified that you don't want changed. Other postings have not done this and if you don't it will update those fields regardless of what the flag bNewDocumentUpdate is set to since that flag only controls versioning. Please read the following and hope that this saves others the multiple days of research I've done 🙂

https://evolvous.com/learn-from-expert/how-to-modify-sharepoint-item-without-changing-its-default-columns-value/

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lbendlin 8,474 Super User 2025 Season 2 on at

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That's a nice technical solution but an auditing nightmare.

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