When running a page in JDeveloper I get and error with code JBO-25069.
Error appears after extending Entity Object.
Note 137422.1 says
JBO-25069: Row definition {0} has two sibling subclasses defs, {1} and {2}, but no discriminator to distinguish them.
- Cause: Two sibling subclasses of a Row Definition are found, but the Row Definition has no discriminator. This condition is disallowed because when a row is either retrieved or created, the framework cannot determine the correct row class. That is, the hierarchy forks withouth a discriminator. The only situation whether subclassing is allowed without discriminator is when the tree is straight lined and only one of the classes in the hierarchy line is used to instantiate rows.
- Action: Either define discriminator attributes, or do not create siblings in the row class hierarchy.
Could someone explain what are the steps to be performed in Action point?
Trying to research but with no luck.
PS
Page ran without exception on the application server .
JDeveloper version 10.1.3.3 .
Thanks in advance , Andrei.