Which activity do you conduct during the design phase of an SAP Ariba Buying and invoicing project? Note: there are 2 correct answers to this question

Which activity do you conduct during the design phase of an SAP Ariba Buying and invoicing project? Note: there are 2 correct answers to this question
A . Update the functional Design documents
B . Lead configuration workshops
C . Conduct work stream interdictions.
D . Create customizations

Answer: A,B