Which invoicing type would be recommended for milestone-based payments for services such as consulting?

Using the non-catalog item requisition with discounts, which of the following contract types' settings must be changed within the Contract Request Details screen? Note: There are 2 correct answers to this question.

what is the advantage of using the network subscription to load catalogs to SAP Ariba buying and invocing?

Which of the following is an SAP Ariba approvable document? Note: There are 3 correct answers to this question

Which of the following statements are true regarding Accounting Functionality?
There are 2 correct answers to this question.