ORA-18287
        invalid level name "string" detected on a calculation expression
        
        
        Cause
        An invalid level name specification was detected on the calculation expression.
        Action
        Ensure the level exists on the hierarchy specified in the calculation expression.
        
     
    
    
        ORA-18287
        invalid level name "string" detected on a calculation expression
        
        
        Cause
        An invalid level name specification was detected on the calculation expression.
        Action
        Ensure the level exists on the hierarchy specified in the calculation expression.
        
     
    
    
        ORA-18287
        invalid level name "string" detected on a calculation expression
        
        
        Cause
        An invalid level name specification was detected on the calculation expression.
        Action
        Ensure the level exists on the hierarchy specified in the calculation expression.