Hello,
Thank you for posting in Q&A forum.
We suggest that you try the following steps to solve the problem of duplicate files and documents in your company's SharePoint Online:
We recommend using SharePoint's duplicate analysis tool or manually finding and deleting duplicate files: SharePoint provides a duplicate analysis tool that can help you identify and manage duplicate files. You can use this tool to find and delete duplicate files, freeing up space. You can also manually search and compare files, identify duplicate content, and manually delete copies within them.
Regardless of which method you choose, you should ensure that important data is backed up before deleting any files to prevent accidents.
Hope this answer can help you well.
Best regards,
Jill Zhou.
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