RDS event notifications include a URL to documentation in Event ID. Here's a sample Message part of an event notification:
"Message": {
"Event Source":"db-instance",
"Event Time":"2022-11-17 18:29:06.384",
"Identifier Link":"https://console.aws.amazon.com/rds/home?region=eu-north-1#dbinstance:id=mariadb-xyz",
"Source ID":"mariadb-xyz",
"Source ARN":"arn:aws:rds:eu-north-1:xxxxxxxxxxxx:db:mariadb-xyz",
"Event ID":"http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Events.html#RDS-EVENT-0088",
"Event Message":"DB instance started"
}
The Event ID link does not open a documentation page that includes the event descriptions. The link page should point to USER_Events.Messages.html in order for the correct description to be displayed, for example http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Events.Messages.html#RDS-EVENT-0088 in the above sample message.