A change in the project management scope can be due to:

A$.$ An external event $($eg$.$ Change in a government regulation$)$

B$.$ an error or omission in defining the scope of the product $($adding a failure system regulation$).$

C$.$ an error in defining the scope of the project $($a missing inspection$)$

D$.$ a value adding change $($positive opportunity$)$

E$.$ a response to an non$-$identified risk $($see section about risk management$)$