> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/workflows/designing-workflows/processes/shape-repository/event-based-gateway.md).
# Event-based gateway
A branching point in a process, where the alternative paths are based on events that occur, rather than expressions.
When execution reaches an event-based gateway, the process stops and waits. Collibra subscribes to all events connected via outgoing sequence flows. When the first event occurs, the process continues along that path and all other event subscriptions are cancelled.
A typical use case is a timeout pattern: the process waits for a message event or a timer event, whichever arrives first.
## General properties
| Property | Description |
| ------------- | ---------------------------------------------------------------- |
| Model ID | The unique identifier of the element within the process model. |
| Name | The name of the element displayed in the diagram. |
| Documentation | A description and any additional information about this element. |
## Advanced properties
| Property | Description |
| ----------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Asynchronous](/workflows/designing-workflows/processes/process-execution.md#asynchronous-activities) | Whether the activity starts as an asynchronous job, placing a transaction boundary before the activity:
- No (default): Synchronous.
- Yes, exclusive: Asynchronous and with no other exclusive asynchronous jobs in the same process run at the same time.
- Yes, non-exclusive: Asynchronous and can run concurrently with other asynchronous jobs in the same process.
|
| Leave asynchronously | Whether the activity leaves as an asynchronous job after it completes, placing a transaction boundary before the process advances to the next element:
- No (default): Synchronous.
- Yes, exclusive: Asynchronous and with no other exclusive asynchronous jobs in the same process run at the same time.
- Yes, non-exclusive: Asynchronous and can run concurrently with other asynchronous jobs in the same process.
|
## Visual properties
| Property | Description |
| ---------------- | --------------------------------------------------- |
| Font size | The font size of the element in the diagram. |
| Font weight | The font weight of the element in the diagram. |
| Font style | The font style of the element in the diagram. |
| Font color | The font color of the element in the diagram. |
| Background color | The background color of the element in the diagram. |
| Border color | The border color of the element in the diagram. |