PGF HANA Replication error violated with message AppDynamics has detected a problem with Application Central Finance - PROD.  PGF HANA Replication error started
The PGF DR database was unavailable due to a hardware issue. We raised an incident with the AWS vendor  177064418000311 and they have confirmed that the issue was related to hardware. 
 
Now system is up and replication is in Sync 