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  • Overview
    • Introduction to UiPath Maestro™
    • Requirements
    • Example scenarios
  • Process modeling
  • BPMN
  • Process implementation
  • Process operations
  • Process monitoring
  • Process optimization
  • Reference information
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Maestro user guide

Last updated Jun 23, 2025

Start events

A start event defines how a process begins. A diagram must include exactly one start event.
Event typeMeaning
NoneUsed for manual starts or when the trigger is defined outside the BPMN model.
MessageIndicates the process is triggered by an incoming message. Often used in called processes.
TimerIndicates the process starts at a specific time or after a delay. Useful for scheduled operations.
Note: Only one start event is allowed per process in Maestro. Use sub-processes to model additional entry points.

For more details about the BPMN elements supported in Maestro, see BPMN support.

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