3349929 - Error:" RFC_COMMUNICATION_FAILURE- SSSLRC_CONN_CLOSED : Remote Peer has closed the network connection" happens when testing connection of IBP datastore - SAP Cloud Integration for data services

• Test connection of IBP datastore failed with WebSocket connection type.
• Error message:
  Test failed for the default configuration 'WEBSOCKET' of datastore: 'XXX':
  Cannot connect to SAP Applications datastore <> using host <>, client <>, user <>, and system number <01: CRFC error: RFC_COMMUNICATION_FAILURE- SSSLRC_CONN_CLOSED : Remote Peer has closed the network connection. SapSSLSessionStartNB()==SSSLRC_CONN_CLOSED
  SSL::SiRecv() failed rc==SSSLRC_CONN_CLOSED
  SSL:SSL_get_state()==0x2120 "TLS read server hello A"
  SSL NI-hdl 41: local=XXX peer=XXX
  cli SSL session PSE "F:\SAP\ssl\sec\ibp_no_password.pse" 
  SSL_CTX ciphersuites=150:PFS:HIGH::EC_P256:EC_HIGH

SAP Cloud Integration for data services

CIDS, CPIDS, IBP, WebSocket, WebRFC, SSSLRC_CONN_CLOSED, Remote Peer has closed the network connection, sapgenpse, seclogin , KBA , LOD-HCI-DS , HANA Cloud Integration for Data Services , Problem