Jun 18, 2026API Entrance Trigger for Sequences
Use the API Entrance trigger for entering and exiting audiences from your own systems. Enroll the same user in a Sequence multiple times, or launch several Sequences from one event.
The API Entrance trigger initiates a Sequence for the audience members specified in a call to a Journeys API endpoint. Each call can include an entrance_id to tag the enrollment, so the same user can be enrolled in the same Sequence multiple times without overwriting earlier enrollments.
The trigger supports the following capabilities:
- Concurrent enrollments per user — Tag each entry with a unique
entrance_idso the same user can be enrolled in multiple instances of a Sequence at the same time. A passenger booked on two flights six hours apart gets independent enrollment in each, with no overwrites. - Multi-Sequence fan-out — Configure the same
triggering_idon more than one Sequence so a single API call enters audiences into all of them. One customer order can start several post-purchase campaigns at once. - Targeted exits — Cancel all in-flight users for a specific
entrance_idin one call. If a store event is cancelled, exit everyone enrolled for that event without needing to identify them individually.
Documentation
For full details, see the API Entrance trigger and the Journeys API reference.