What privileges does a PPM user need to be able to view Billing Transactions?

Summary: What privileges does a user need to have to be able to view Billing Transactions? I have followed all the instructions; including opt-in, Bill Plan requirements, Revenue Plan requirements. When I try to access the billing transactions, via the Billing area of the Management Contract module, or the option in project financial management; the system displays a message commenting that there are not billing transactions. The process to create billing transactions runs and the final status is 'Succeeded'. I have created an SR and the responses from the AI contradict themselves. I feel that