This update https://support.microsoft.com/en-us/topic/kb5006943-on-demand-hotfix-update-package-for-sql-server-2016-sp3-94de2975-cd7d-47ed-b003-5d7daf4e2caf contains hotfixes for issues that were fixed after the release of SQL Server 2016 SP3 (https://support.microsoft.com/en-us/topic/kb5003279-sql-server-2016-service-pack-3-release-information-46ab9543-5cf9-464d-bd63-796279591c31 ). To apply this hotfix package, you must have SQL Server 2016 installed on your computer.
Note The build number of the hotfix update package is 13.0.6404.1.