In Flow Designer, a Flow Execution is initiated by a trigger. A trigger determines when and under what conditions a flow starts.
Types of Triggers in Flow Designer:
Record-Based Trigger
Executes the flow when a record is created, updated, or deleted in a specific table.
Example: A flow runs when an Incident is created with a specific priority.
Schedule-Based Trigger
Executes the flow at a specific time or on a recurring schedule.
Example: A flow runs every Monday at 8 AM to check overdue tasks.
Application-Based Trigger (Inbound Actions, API Calls, or Events)
Executes the flow when a specific event occurs in ServiceNow.
Example: A flow runs when an email is received in ServiceNow.
Why Other Answers Are Incorrect:
B . An existing subflow
Subflows are reusable flows that can be called within a parent flow.
A subflow does not initiate execution on its own; it must be triggered by a flow or script.
C . Allow logic
No such term exists in Flow Designer; logic applies within a flow but does not initiate execution.
D . An execution data pill
Data pills represent stored data within a flow but do not trigger execution.
Reference from Certified System Administrator (CSA) Official Documentation:
ServiceNow Flow Designer - Triggers
ServiceNow CSA Training Module: "Building Flows with Flow Designer"