sourceDbClusterSnapshotIdentifier
The identifier of the DB cluster snapshot to copy. This parameter isn't case-sensitive.
You can't copy an encrypted, shared DB cluster snapshot from one Amazon Web Services Region to another.
Constraints:
Must specify a valid system snapshot in the "available" state.
If the source snapshot is in the same Amazon Web Services Region as the copy, specify a valid DB snapshot identifier.
If the source snapshot is in a different Amazon Web Services Region than the copy, specify a valid DB cluster snapshot ARN. For more information, go to Copying Snapshots Across Amazon Web Services Regions in the Amazon Aurora User Guide.
Example: my-cluster-snapshot1