Create an entry for the Replication Server in the interfaces file (sql.ini file in Windows) of the SAP IQ data server. If there are multiple Replication Servers replicating to a single SAP IQ server, you must add all Replication Servers to the interfaces file.
If you are creating connections to different SAP IQ multiplex nodes, create entries for each of the affected nodes in the interfaces file of the replicate Replication Server.