Known issues and limitations for Data Replication

You cannot modify the structure of target tables outside of Data Replication

When you run a Data Replication asset that has the Copy business goal, Data Replication owns the maintenance of the target tables. You will not be able to modify the structure of these target tables outside of Data Replication. If Data Replication is in the process of applying a structural change to a table, that table might be temporarily locked for reads.