I can add myself to any Site Owners group via the web but getting Access Denied using PowerShell

[mcresIT]

Add-SPOUser -Site "https://mysite" -Group "mySite Owners" -LoginName myemail

Add-SPOUser : Attempted to perform an unauthorized operation.

I can successfully add other users to sites I'm already Owner using the above CMD.

Thank you!

[#2]

To retrieve permissions for sharepoint site, you need to have full control permissions on this site. Ask your site collection administrators to give your full control permissions.

https://learn.microsoft.com/en-us/answers/questions/508686/error-attempted-to-perform-an-unauthorize...

[#3]

ty, yet, it will let me add myself to the Owners or Admins group of the site from the Web Portal? If I can add myself why do I need to ask the Site Collection admin? (just learning) ty

[#4]

" I granted the application API permissions for SharePoint Online in Azure AD. I had to grant it full control to all sites." I think you need somebody to give the App Registration more permissions here https://portal.azure.com/#view/Microsoft_AAD_IAM/StartboardApplicationsMenuBlade/~/AppAppsPreview/me... (PnP Management Shell, AllSites.FullControl permissions)

But I'm not a SharePoint expert :)

[#5]

Any update?