BI Publisher Report Issue -"Failed to load servlet/dmvalidate?_sTkn=dea4afb718b89c1d4df."
In some of the Data Model (Fusion SaaS) , I am below error when I open the datamodel.
"Failed to load servlet/dmvalidate?_sTkn=dea4afb718b89c1d4df."
Also I noticed that this is happening due to the CASE statement in the query. It works if I remove the CASE statements. I have very complex queries with CASE statement which was working before and deployed in the Production. However, I am getting error now.
Please can anyone assist to resolve the issue.