3221437 - System replication is failed due to "Connection refused: Primary has to run in log mode normal for system replication!"

• You have set up system replication.
• Log mode is set to "normal" in system level
  /usr/sap/<SID>/SYS/global/hdb/custom/config/global.ini
  [persistence]
  log_mode = normal
• Replication status of some services are in ERROR instead of ACTIVE. 
  
  
• Following error message can be found in service trace in secondary site
  e sr_dataaccess    DisasterRecoverySecondaryImpl.cpp(01005) : Error occurred during compatibility check: exception  1: no.3000303  (DataAccess/impl/DisasterRecoveryProtocol.cpp:3433) TID: 13617
      Primary is not in log mode normal or log mode cannot be determined
  
   "Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

HANA 2.0

HA, system replciation, takeover, failed, normal, overwrite, Backup has not yet been executed on primary system! Please backup primary system, BACKUP DATA seems to have been executed, database should be recoverable from backup , KBA , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) , How To