If it's not a hidden item, detail what item you are having trouble with, what alterations occur on it (DA, processes) and what action(s) you perform which cause the error. Better yet, build you page on apex.oracle.com and share the workspace details so we can look at it.
It is not a hidden item to set the value protected to "No".
Its is a select list item but with read only condition.
When trying to save the value of that item, i am getting the session state error asking me to contact the administrator. Already the read only value is being shown in the session as well.
Let me see if i can recreate n send the details.
Thanks for the response.