Created Unassigned: Central admin database need upgrade [22445]

I have just built 3 SharePoint 2016 Farm with December 2016 CU. All the 3 Farms had their Central admin content database requiring upgrade.

I had to run:


(Get-SPWebApplication -IncludeCentralAdministration | ? {$_.DefaultServerComment -match "SharePoint Central Administration V4"}).contentdatabases | Upgrade-SPContentDatabase

in order to fix it.