A list of event type category codes. Possible values are issue, accountNotification, or scheduledChange. Currently, the investigation value isn't supported at this time.
issue
accountNotification
scheduledChange
investigation
The unique identifier for the event type. The format is AWS_<i>SERVICE</i>_<i>DESCRIPTION</i> ; for example, AWS_EC2_SYSTEM_MAINTENANCE_EVENT.
AWS_<i>SERVICE</i>_<i>DESCRIPTION</i>
AWS_EC2_SYSTEM_MAINTENANCE_EVENT
The Amazon Web Service that is affected by the event. For example, EC2, RDS.
EC2
RDS