3598040 - Error: "HTTP/1.0 503 Service Unavailable" occurs when testing connection for IBP datastore - SAP Cloud Integration for data services

• Connection test for IBP datastore fails
• Test failed for the default configuration 'default' of datastore: 'xxx':
  Cannot connect to SAP Applications datastore <> using host <xxx>, client <100>, user <>, and system number <01: CRFC error: RFC_COMMUNICATION_FAILURE- SSSLRC_CONN_CLOSED : Remote Peer has closed the network connection. SapSSLReadNB()==SSSLRC_CONN_CLOSED
  . unable to receive data from host: port. Response: HTTP/1.0 503 Service Unavailable
  content-type: text/html
  pragma: no-cache
  date: Timestamp
  x-sap-icm-err-id: ICMENOSYSTEMFOUND
  sap-err-id: ICMENOSYSTEMFOUND
  connection: close
  x-content-type-options: nosniff
  strict-transport-security: max-age=31536000; includeSubDomains
  x-xss-protection: 1; mode=block [SAP Partner]>. Please make sure the SAP server is running and the login information is correct.

SAP Cloud Integration for data services

CPI-DS, Datastore, IBP, Connection Failure, Connection Test, HTTP/1.0 503 Service Unavailable, ICMNOSYSTEMFOUND, IP addresses, network connection , KBA , LOD-HCI-DS , HANA Cloud Integration for Data Services , Problem