#4768 add UOW information to the local event bus too.

docs/en/Local-Event-Bus.md

@@ -154,6 +154,8 @@ That's all. `MyHandler` is **automatically discovered** by the ABP Framework and
 * **Zero or more handlers** can subscribe to the same event.
 * A single event handler class can **subscribe to multiple events** but implementing the `ILocalEventHandler<TEvent>` interface for each event type.
 
+If you perform **database operations** and use the [repositories](Repositories.md) inside the event handler, you may need to create a [unit of work](Unit-Of-Work.md), because some repository methods need to work inside an **active unit of work**. Make the handle method `virtual` and add a `[UnitOfWork]` attribute for the method, or manually use the `IUnitOfWorkManager` to create a unit of work scope.
+
 > The handler class must be registered to the dependency injection (DI). The sample above uses the `ITransientDependency` to accomplish it. See the [DI document](Dependency-Injection.md) for more options.
 
 ## Transaction & Exception Behavior