In Microsoft Exchange Server 2019 or Exchange Server 2016, when you try to create a transport rule on an Edge transport server by setting the Quarantine parameter as True, you receive the following error message:
A parameter was specified that isn't valid on an Edge Transport server.
To fix this issue, install one of the following updates:
For Exchange Server 2019, install the Cumulative Update 4 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019.
For Exchange Server 2016, install the Cumulative Update 15 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.
Learn about the terminology that Microsoft uses to describe software updates.