There are several requirements for Failover support.
To enable Failover support, a SAP Replication Server must connect to SAP ASE that are version 12.0 or later and configured for Failover.
Failover of Replication Server System Databases (RSSDs) and user databases is configured directly through the SAP ASE.
Failover support responds only to failover of the SAP ASE servers; that is, failover of SAP Replication Servers is not supported.
SAP ASE is responsible for the SAP ASE RepAgent thread failover and its reconnection to SAP Replication Server after failover/failback.
Each SAP Replication Server configures its own connections.