E1Pages in not opening in Composite Pages in particular environment

Hi Team,

I have created two environments in PY920 and facing issue on E1pages. My setup is on 9.2.3.3 with Oracle DB and on Linux platform.

In one environment, I can see the E1Pages fine in the standard composite page, but other environment which shares the same pathcode is showing it blank. I think UDOs are pathcode specific, so not quite sure what should be the issue here. I have separate AIS for both the JAS environments. I compared the JAS configurations and all are same except the environment names and AIS ports. Need suggestion on what should I check here to validate.