App Catalog
Use of the Webtrends SharePoint 2019 Modern View Extension app extension requires a properly configured app-catalog in the environment.
Please see Microsoft official documentation for help creating an app catalog site.
Permissions
Deployment of extensions to a site collection directly and enable it generaly require Site Administrator permissions. The add-in can also be deployed in bulk via Power Shell with unknown Permission requirements.
The managed paths deployment for app extensions appears to be unsupported by Microsoft.
Webtrends SharePoint Tag Installer
The app extension's references the same configuration lists as the Webtrends SharePoint Tag Installer on the same site collection. As such, the Webtrends SharePoint Tag Installer must be also installed and enabled for tracking with a valid DCSID.
Please see Webtrends SharePoint Tag Installer Configuration.
Tagging Matrix
| SharePoint 2019 | Classic Page | Modern Page |
|---|---|---|
| Classic Site | Tag Installer | Tag Installer, App Extension |
| Modern Site | Custom Scripting, Tag Installer, App Extension | Tag Installer, App Extension |