The maximum number of unique permissions in SharePoint library is 50,000 – Sometimes we may need to know what is the maximum number of unique permissions in a SharePoint library we may have – when we have multiple nested folder structures inside the library.
Description: Maximum number of unique permissions in SharePoint library
Maximum unique permission in a list is allowed 50,000 but as per Microsoft recommended is 5000

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Summary: SharePoint unique permissions
Thus, here we have learned about what is the allowed maximum number of unique permissions in a SharePoint library.
See Also: SharePoint Online PowerShell
You may also like the below SharePoint Online PowerShell tutorials:
- Office 365: Getting started with SharePoint PnP PowerShell – installation
- In 2 steps convert a classic SharePoint page to modern using PnP
- Office 365: Retrieve hub sites and associated sites using PnP Powershell
- Create a modern team site using PnP PowerShell in SharePoint
- In 4 steps access SharePoint online data using postman tool
- SharePoint admin center: Learn SharePoint online administration in an hour – step by step
- SharePoint REST API: GET vs POST vs PUT vs DELETE vs PATCH
- Office 365: Understanding the hub site in SharePoint online

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