Aurora MySQL–based DB clusters running Aurora Serverless v1 don't support replicating data using replication based on binary logs

This limitation is true regardless of whether your Aurora MySQL-based DB cluster Aurora Serverless v1 is the source or the target of the replication. To replicate data into an Aurora Serverless v1 DB cluster from a MySQL DB instance outside Aurora, such as one running on Amazon EC2, consider using AWS Database Migration Service. For more information, see the AWS Database Migration Service User Guide.