2522789 - How to check error ' Web service ping failed for logical port LP_SISE_SUPPORTHUB ' in Solution Manager 7.2 as of SP05

Following error occurs in step "Finalize Support Hub Connectivity":

     Web service ping failed for logical port LP_SISE_SUPPORTHUB, Proxy CO_SISEHUB_MI_O*
     

Ping Web Service as section 'Reproducing the Issue' may get the following errors:

1. Web service ping failed (RC=401). Service Ping ERROR: Unauthorized  Service Ping ERROR: Unauthorized
2. SOAP:1023 SRT: Processing error in Internet Communication Framework: ("IcmConnInitClientSSL: Proxy connection to https://servicepoint.sap.com:443 via webproxy.<proxy_host>:<proxy_port> failed (proxy returned 407 Proxy Authentication Required)")
3. Error when calling SOAP Runtime functions: SRT: Processing error in Internet Communication Framework: ("Connect to servicepoint.sap.com:443 failed: NIEHOST_UNKNOWN(-2)")
4. NIEROUT_INTERN(-93)
5. Error when calling SOAP Runtime functions: SRT: Processing error in Internet Communication Framework: ("HTTPIO_PLG_CANCELED")
6. SSL handshake with servicepoint.sap.com:443 failed: SSSLERR_PEER_CERT_UNTRUSTED (-102)

SAP Solution Manager 7.2 as of SP05

CO_SISEHUB_MI_O_AS_PUT_EXTERNA, CO_SISEHUB_MI_O_S_SHB_GET_EX, CO_SISEHUB_MI_O_S_SHB_LIST, CO_SISEHUB_MI_O_S_SHB_REMOVE , KBA , SV-SMG-INS-CFG-SYP , System Preparation , Problem