3448861 - XI_IDOC_DEFAULT_DESTINATION_<SID> Gateway failed

• XI_IDOC_DEFAULT_DESTINATION connection test is failing
• During RFC XI_IDOC_DEFAULT_DESTINATION communication test a similar error as below is showing on the XPI traces:
  MP: exception caught with cause \{0\}    com.sap.aii.af.idoc.exception.IDOCAdapterException
  AFW_ERROR    com.sap.conn.jco.JCoException: (102) JCO_ERROR_COMMUNICATION: Connect to SAP gateway failed connection parameters: TYPE=A DESTINATION=XI_IDOC_DEFAULT_DESTINATION_xxx ASHOST="hostname".no SYSNR=02 GWHOST="hostname".no GWSERV=sapgwxx PCS=1 LOCATION CPIC (TCP/IP) on local host with Unicode ERROR max no of 404 conversations exceeded TIME ... RELEASE 753 COMPONENT CPIC (TCP/IP) with Unicode VERSION 3 RC 466 MODULE /bas/753_REL/src/krn/si/cpic/r3cpic.c LINE 16176 COUNTER 2 (remote system is [])
  SEND_TRANSMIT_ERROR    AFW; com.sap.aii.af.idoc.exception.IDOCAdapterException;
  
  Error during ping operation: Initialization of repository destination XI_IDOC_DEFAULT_DESTINATION_<SID> failed: Connect to SAP gateway failed
  
  LOCATION    CPIC (TCP/IP) on local host with Unicode
  ERROR       max no of 404 conversations exceeded
  TIME        Thu Mar 21 09:29:26 2024
  RELEASE     753
  COMPONENT   CPIC (TCP/IP) with Unicode
  VERSION     3
  RC          466
  MODULE      /bas/753_REL/src/krn/si/cpic/r3cpic.c
  LINE        16176
  COUNTER     2

• SAP NetWeaver
• SAP Process Integration 7.50 

Process Orchestration 7.50, Process Integration 7.50, PI 7.50, PO 7.50, NetWeaver, RFC, SM59, PI_AAE_IDOC  , KBA , BC-XI-CON-IDO , Idoc Adapter J2EE , Problem