Today when we tried to enable site collection app catalog using PowerShell we got the below error.
“Add-SPOSiteCollectionAppCatalog : Must have Manage Web Site permissions or be a tenant admin in order to add or remove sites from the site collection app catalog allow list”
Enable app catalog at site collection level using PowerShell
Verified to check this issue:
I am having access to SharePoint Tenant admin but still I am facing this issue when I am trying to run the PowerShell.
After some time realized that we need access to SharePoint Appstore site collection admin access to that particular account you are running PowerShell .