You must create subscriptions to function replication definitions for either applied or request functions using create subscription and the no-materialization method or define subscription and the other commands for bulk materialization: activate subscription, validate subscription, and check subscription.
The only exception is the function replication definitions with versions earlier than 15.1 used for request functions without subscription. See Replication Server 15.6 Administration Guide Volume 2 > Pre-15.1 Request Function Replication.
If you specified searchable parameters in the function replication definition, you can subscribe to a function based on the value of its parameters.
You drop subscriptions to function replication definitions using drop subscription. They are dropped without purging the replicate data associated with the function. You do not need to specify the without purge option.
See Replication Server Reference Manual > Replication Server Commands, and related commands, for the full syntax for bulk materialization commands.