Batch Validation resulting in Application was unable to interpret event information

From few days while trying to book the Configured order in OM we are always getting "Configuration validation resulted in errors".

When I tried to test the batch validation using the code snippet given in implimentation guide, the response that I got from the UiServlet is  "Application was unable to interpret event information".

Can anybody help me out please, what could be the issue here. Below is the code snippet I am using for testing.

-- Run this query in SQL*Plus, providing input of model id
-- This query is like what the host application might send.
-- The output might go back to some other servlet.