SAP Knowledge Base Article - Public

3457167 - Error in SAP Cloud Applications Studio (SDK) After Idle Time


You can see following errors after an idle time of SAP Cloud Applications Studio:

  • xRepository Error
  • ProtocolException (SERVER): JSON communication failure. Severe server side error. Exporting parameter is null.
  • ProtocolException (SERVER): JSON communication failure. There was an error deserializing the object of type. 
  • ProtocolException (CLIENT): Details: Object reference not set to an instance of an object.

As a result, you can only close SAP Cloud Applications Studio via the Task Manager.


  • SAP Cloud Applications Studio
  • SAP Cloud for Customer
  • SAP Business ByDesign

Reproducing the Issue

  1. Navigate to SAP Cloud Applications Studio.
  2. Open a Solution.
  3. Open a Script.
  4. Start Debugger.
  5. Leave it opened for some hours without using it. 


These errors are raised because of idle session timeout. 


When SAP Cloud Applications Studio is left idle for a long time (>10 mins), the best would be to logoff and login again before doing any other action on the SAP Cloud Applications Studio. Else, you will need to close it via the Task Manager. 


sdk, idle time, idle, session time out, session time, xRepository Error, ProtocolException (SERVER), JSON communication failure, Severe server side error, Exporting parameter is null.

, KBA , AP-RC-BDS-1O , ByDesign Studio OneOffs , How To


SAP Business ByDesign all versions ; SAP Cloud Applications Studio all versions ; SAP Cloud for Customer add-ins all versions ; SAP Cloud for Customer core applications all versions