I am creating an approval flow as follows:
1. The user creates an Excel file → places it inside a folder called "for approval" on Teams.
2. Power Automate moves this file from the "for approval" folder to "under approval" and sends an email to the approvers.
3. The "under approval" folder should be locked to prevent any kind of modification, so that the file cannot be altered while it is in the approval process.
4. If approved, the file goes to a folder called "approved," and if rejected, the file goes to a folder called "rejected."
The flow I created is already working, but the issue is that the folder is not locked while the file is in the approval process.
How can I lock the file while it is in the approval process so that no one can make changes?
Thank you in advance for your help!

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