It will take parameters for number of days, weeks, months, or years that you want to go back in time. It will take that and pull all devices that have not logged into AD since that time and remove them from AD and SCCM. There is also a parameter for search base, which is the OU of AD that you want to look in. It includes all of the same help items as well.
Update sourceAnchor in Entra Connect for Seamless Integration
There could be several reasons that you would need to change the sourceAnchor in Entra Connect (formerly Azure AD Connect), such as an old installation that still uses objectGuid instead of ms-Ds-ConsistencyGuid, or maybe you need