Why do i get a JBO-26080 Error

Question

Hi all,
My problem:
I would appreciate it if someone out there could tell me why i'm getting the following error:
oracle.jbo.DMLException: JBO-26080: Error while selecting entity for Output (this is the name of my entity object)
Some Background Information:
I am still fairly new to JDev and I've developed a JSP site using the BC4J set of tools. The whole site runs fine, except for the above error. My biggest problem is that the page does not give this error every time I call it.
The page itself has a refresh button, a couple of drop-down lists and a few checkboxes on it. The form tag calls a JSP page that simply processes the pages parameters (storing the parameter settings in custom properties I created in the application object), calls a Stored Procedure to populate a table for reporting and then calls <jsp:forward> to call the original page which diplays the populated table.
Generally I can call hit the refresh button twice and on the third time it brings up the above error message. If i use the browsers back button to go to the previous selections and then use the browsers forward button, the page is refreshed fine with the correct selections, but every refresh after that will result in the jbo error message.

Answer 1

See the last comment in my "Dive Into BC4J" weblog on this day:
http://radio.weblogs.com/0118231/2003/01/16.html
for a pointer to an article about "ways to get more information" when a DML error (or other kind of error) happens...
Hope this helps.