2732200 - Unable to Ping Employee Central APIs using tcode HRSFEC_PTP_CONFIG - ECP

You are trying to run the functionality Ping Employee Central APIs in the report RP_HRSFEC_PTP_CONFIGURATION (transaction HRSFEC_PTP_CONFIG) and you are observing the following errors after this run:

• SOAP login/logout has failed with exception: HTTP client - communication error
  SOAP login/logout HTTP status code:
  HTTP response could not be parsed. Please check the connection settings.
  SOAP login/logout has failed with exception: HTTP client - communication error
  OData query has failed with exception: HTTP client - communication error
  OData query has failed with HTTP status code 0 for object
  EmployeeDataReplicationConfirmation.
  OData query has failed with exception: HTTP client - communication error
  OData query has failed with HTTP status code 0 for object DataReplicationProxy.

Employee Central Payroll using Point-to-Point Integration - OData and SFAPI RFC connection

program report RP_HRSFEC_PTP_CONFIGURATION, transaction tcode HRSFEC_PTP_CONFIG, Unable to Ping Employee Central APIs through PTP Configuration, Employee Master Data API, Confirmation API, Time Data API, STRUST, certificates, API Server URL, Employee Central Payroll, ECP, webservice fails. Ping failed, communication error, OData SOAP login/logout has failed with exception, NIECONN_REFUSED(-10) , KBA , LOD-EC-GCP-PY , Payroll Integration EC to Employee Central Payroll , LOD-SF-INT , Integrations , How To