What is required to invoke a subflow in Flow Designer?

Invoking a subflow in Flow Designer is accomplished by using the appropriate subflow action within a flow. This action is specifically designed to call and execute subflows, allowing for the reuse of logic and processes defined in those subflows.

When a flow is defined, a subflow action can be added, which enables the main flow to execute the subflow, passing along any necessary input data if required. This modular approach helps keep flows organized and efficient, as it promotes the reuse of existing workflows without duplicating effort.

The other options do not directly relate to the mechanics of invoking a subflow. Specific user roles, data privacy policies, and trigger conditions pertain to different aspects of flow management and governance but are not prerequisites for invoking a subflow.