CA PPM login error Unable to process request - Server or Network error

Document ID : KB000118507
Last Modified Date : 25/10/2018
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This CA PPM popup error is received when one end user tries to navigate in CA PPM.
- - - 
<!> [EN - ERROR]

[en - Unable to process request - Server or Network error]

[en - Close]
- - -

Server Error
CA PPM All Versions
Unable to process request - Server or Network error, this usually indicates some network disruption (like wifi disconnect or temporarily unplug the network cable). On a network disconnect, client will not be able to reach the server and hence that pop-up which indicates the user that the connection is lost. This is informative message. Note - if it only happens for one user or very infrequent this should not indicate wider issue, if it's something in continuous please open CA Support case and we will investigate.

This is usually accompanied by HTTP status code error in the app-ca.log files.
For example: 
ERROR 2018-09-22 04:14:15,293
OnError called--Client Side Exception 
java.lang.Exception: VXMLRequest failed. HTTP status code was: 0...