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IBM RTC 6.0.3 Restrict permissions to modify the enumeration value of WI

Hello,
One answer

There are two types of enumerations
- Enumeration stored in the process configuration
- Enumeration stored in the database
Comments

both are in denied and the user is able to change them using a template that has the an old value.

This comment makes no sense at all. A template can not be changed by a user and even if, would not have effect on the project area process.
There is also no information that would help trying to narrow down what is actualy happening. You do not explain what type the specific enumeratiuon is. If it is stored in the process configuration, there is also a lack of information what the process specification history shows - which would indicate the user actually was able to save it.
As all this information is missing, I suspect that there is a lack of understanding how roles and permissions work and what actually is happening and where to look for clues. In any case there is no way to help with no information.