Event identifiers

Event identifiers uniquely distinguish one event from another. Event Management uses these identifiers to determine whether to create a new alert or update an existing one.

By default, an event is uniquely identified by the following fields:

• Message Key
• Domain
• Category

Changing the Category field (for example, through a Background Script or Business Rule) may lead to unexpected system behavior.

If the Message Key is not provided, the system automatically generates one by concatenating the following fields:

• Source
• Type
• Node
• Resource
• Metric Name

If the above fields are not defined in the incoming event, you can define them using event rules.