fileSystemId

The ID or ARN of the file system to use for the destination. For cross-account replication, this must be an ARN. The file system's replication overwrite replication must be disabled. If no ID or ARN is specified, then a new file system is created.

When you initially configure replication to an existing file system, Amazon EFS writes data to or removes existing data from the destination file system to match data in the source file system. If you don't want to change data in the destination file system, then you should replicate to a new file system instead. For more information, see https://docs.aws.amazon.com/efs/latest/ug/create-replication.html.