OVERRIDE_WARNING_CWOBJ2421=CWOBJ2421W: The List that was supplied to override client side ObjectGrid settings for cluster {0} contains an element that is not an ObjectGridConfiguration object. This element will be removed from the List: {1}.
Explanation
Client-side overriding will take place using only the objects in the List that are of type com.ibm.websphere.objectgrid.config.ObjectGridConfiguration.
User response
Remove objects from the client-side override List that are not of type com.ibm.websphere.objectgrid.config.ObjectGridConfiguration.