[Jazz build engine] CRRTC3524W: Communication with the repository failed due to this error: CRJAZ1373E

Hello Team,
Please help with this error:
[Jazz build engine] CRRTC3524W: Communication with the repository failed due to this error:
CRJAZ1373E The followin URL can not be  reached: /ccm/versionCompatibility?clientVersion=6.0.
The network stated that the server is unknown and then returned to ratsuite192.sby.ibm.com.

C:\RTC_Builds\Engines>cd "C:\Program Files (x86)\IBM\TeamConcertBuild\buildsystem\buildengine\eclipse"   && jbe -repository https://ratsuite192.sby.ibm.com:9443/ccm
-userId uidextbd@fr.ibm.com -passwordFile pass.txt -engineId uid.tscm.collector_and_policy.engine
2018-07-17 13:19:14 [Jazz build engine] Running build loop...
2018-07-17 13:19:14 [Jazz build engine] Waiting for request...
2018-07-17 13:19:28 [Jazz build engine] CRRTC3524W: Communication with the repository failed due to this error: CRJAZ1373E The followin
g URL cannot be reached: /ccm/versionCompatibility?clientVersion=6.0. The network stated that the server is unknown and then returned
the following error: ratsuite192.sby.ibm.com.
 
Regards,
Debasis