New-SPAppManagementServiceApplication : A SharePoint database named XYZ already exists.
I was configuring SharePoint app catalog service applications the other day using my old scripts for that, and there is one problem I often see when using PowerShell scripts for configuring SharePoint: those work much better as they save your time you may spend on wading through cumbersome GUI, but in case when you need … New-SPAppManagementServiceApplication : A SharePoint database named XYZ already exists.