NOSUPPLSUPPL, Instance ssss is configured to perform local updates, so it cannot receive from Supplementary Instance iiii
Receiver Server log/MUPIP Error: Issued by a Receiver Server or a MUPIP JOURNAL -ROLLBACK -FETCHRESYNC on a Supplementary Instance ssss started with -UPDOK attempted to connect to instance iiii, but found IIII is also a Supplementary Instance. A Supplementary Instance that permits local updates can only replicate updates that originate on a non-Supplementary Instance.
Action: Reconfigure the instances to a supported configuration.