Hi Team In POL if there is more than 2,000 projects, it is recommended to set up a separate project subsite. Is this a SP site or a MS Project site? I've thought it was a SP site but it doesn't seem to work.Many thanksJames

Hi James_Price , There is a limit on 2,000 sub sites per site collection, this is a SharePoint Online site collection limit. Once the PWA Site collection has 2,000 sub sites, if you want to create additional project sites, this is when you need to create a new SharePoint site collection (Not a PWA site collection) to host the additional project sites. Details can be seen here: https://learn.microsoft.com/en-us/ProjectOnline/tune-project-online-performance?redirectSourcePath=%252fen-us%252farticle%252fTune-Project-Online-performance-12ba0ebd-c616-42e5-b9b6-cad570e8409c#project-site-configuration Worth noting is the lack of support for user permission sync with project sites hosted outside of the PWA site collection: https://learn.microsoft.com/en-us/ProjectOnline/tune-project-online-performance?redirectSourcePath=%252fen-us%252farticle%252fTune-Project-Online-performance-12ba0ebd-c616-42e5-b9b6-cad570e8409c#sync-user-permissions Hope that helps Paul

POL 2,000 project site limit... | Microsoft Community Hub

RodFromm
Steel Contributor
Feb 08, 2024
I believe there is more to it than that. If for every project you create there is a Project site created then the 2,000 limit comes into to play, but I have heard conflicting answers to this from Microsoft engineers. Personally, we have two sites that each have over 5,500 projects without any issues, but we also don't create Project sites for every project.
- Paul_Mather
  MVP
  Feb 10, 2024
  Hello RodFromm ,
  
  The PWA Site collection can have 30,000 projects but only 2,000 of those projects could have a project site if you only used the PWA site collection to host project sites.
  
  Paul
  - RodFromm
    Steel Contributor
    Feb 10, 2024
    Paul_Mather thanks for the information as could never find any information online.
Paul_Mather
MVP
Feb 10, 2024
Hi James_Price ,

There is a limit on 2,000 sub sites per site collection, this is a SharePoint Online site collection limit.

Once the PWA Site collection has 2,000 sub sites, if you want to create additional project sites, this is when you need to create a new SharePoint site collection (Not a PWA site collection) to host the additional project sites. Details can be seen here: https://learn.microsoft.com/en-us/ProjectOnline/tune-project-online-performance?redirectSourcePath=%252fen-us%252farticle%252fTune-Project-Online-performance-12ba0ebd-c616-42e5-b9b6-cad570e8409c#project-site-configuration
Worth noting is the lack of support for user permission sync with project sites hosted outside of the PWA site collection: https://learn.microsoft.com/en-us/ProjectOnline/tune-project-online-performance?redirectSourcePath=%252fen-us%252farticle%252fTune-Project-Online-performance-12ba0ebd-c616-42e5-b9b6-cad570e8409c#sync-user-permissions

Hope that helps

Paul

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POL 2,000 project site limit...