Error in Documentum Application

Hi Experts,

While we are clicking on some functionality called generate proposal a document should get generated , but while replaying the script the document is not getting generated. I am using web( Http\Html) Protocol.
The Application is built on EMC's Documentum.

Please find the attached screen shot of the error message.

The error is "An error has occurred After closing the popup error message window, press the Refresh or Reload button on your browser to continue."

Please suggest.

Thanks and Regards
Sanjay