{"id":"rds-failover-target-instance-optional","text":"The `TargetDBInstanceIdentifier` parameter in `FailoverDBCluster` is optional — if omitted, RDS chooses which replica/standby to promote; it is not supported for RDS for MySQL Multi-AZ DB clusters.","truth_value":"IN","source":"entries/2026/03/11/AmazonRDS-latest-APIReference-API_FailoverDBClusterhtml.md","source_url":"","source_hash":"cc6e7681e447ccf7","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"rds-failover-target-instance-optional","truth_value":"IN","reason":"premise"}]}}