2442331 - PI ESR unable to connect to backend ECC system

• You are using Process Integration (PI) or Process Orchestration (PO) and have recently upgraded your system
• You are facing an issue when trying to import IDOC or RFC Metadata into the Enterprise Service Repository (ESR) as the below:
  ERROR com.sap.aii.utilxi.swing.toolkit.ExceptionDialog: MessageID=IBF.lib_gui.005265#Failed toinitialize Exception Dialog
  Thrown:
  com.sap.aii.ib.sbeans.upload.RemoteUploadException: Unable to establish connection to R/3 system sapxxxxx (system=xx,client=xxx)
  at com.sap.aii.ib.server.upload.UploadServiceBean.openSAPSource(UploadServiceBean.java:88)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  ...
  Serialized cause: java.lang.IllegalStateException: DDFactory could not be instantiated: Check you backend connection
  at com.sap.mdi.ddtypes.DDFactory.<init>(DDFactory.java:70)
  at com.sap.mdi.ObjectFactory.initialise(ObjectFactory.java:6051)
  

• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5

Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.4, PI 7.4, PO 7.4, Process Orchestration 7.5, PI 7.5, PO 7.5, XI, swing tools, PI tools, IB , KBA , BC-XI-IBD , Integration Builder - Design , BC-DWB-DIC-MDI , Meta Data Interface Java Library , Problem