3035335 - setuphadr is failing on error: MessageInvalid logical host name - SRS

• setuphadr failing on companion host
• setuphadr log shows:
  
  20XX-03-11 21:11:21 (SQL command) sap_set_host logicalhost1, 'logicalhost1', 5000, 'logicalhost1', 5005, 4909
  TASKNAMETYPE VALUE
  -------- ----------------------------- ---------------------------------------------------------------------------------------------------------
  Set HostStart Time Thu Mar 11 21:11:24 UTC 2021
  Set HostElapsed Time 00:00:00
  SetHost Task Name Set Host
  SetHost Task State Error
  SetHost Short Description Define a logical host with hostname and port for both ASE and Replication Server.
  SetHost Long Description Validating user specified arguments.
  SetHost Failing Command sap_set_host logicalhost1, logicalhost1, 5000, logicalhost1, 5005, 4909,
  SetHost Failing Command Error MessageInvalid logical host name logicalhost1.
  SetHost Corrective Action Retry command with a logical host name that is 10 characters or less and contains only digits or letters.
  SetHost Task Start Thu Mar 11 21:11:24 UTC 2021
  SetHost Task End Thu Mar 11 21:11:24 UTC 2021
  SetHost Hostname logicalhost1
  2021-03-11 21:11:21 (SQL command) sap_pre_setup_check dr, logicalhost1, logicalhost2
  TASKNAME TYPE VALUE
  ------------------- ---------- -------------------
  SAP_PRE_SETUP_CHECKTask Name SAP_PRE_SETUP_CHECK
  SAP_PRE_SETUP_CHECKTask StateError
  20XX-03-11 21:11:21 Error: Setup RMA...Fail
  
  

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

• SAP Replication Server (SRS) 16.0
• SAP Replication Server (SRS) 15.7
• SAP Adaptive Server Enterprise (ASE) 16.0 with Always-on Option (HADR)  

RepServer, setuphadr , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , BC-SYB-REP-SAP , Replication with SAP Suite / SAP BW , How To