OAF Update page: unable to update Values
Unable to perform transaction on the record.
Cause: The record contains stale data. The record has been modified by another user.
Action: Cancel the transaction and re-query the record to get the new data.
When you see a Error like this on the OAF page when other things are right. You have to change EO property. Go to Your EO and select the Attributes and Check the option called “Change Indicator”.