Private Offers - problems finding billing ID and failures accepting offers

Note: Please note that the response below was carried over from a previous marketplace for partners community discussion. Original authorship has been removed. On point 1, could it be the customer only has CSP billed Azure subscriptions? Typically the customer doesn't have a billing ID in this case. We have had to talk customers through creating an additional PAYG Azure sub in order to consume our app. We've given up on private offers to customers in part because of this. We now have a set of private plans on the offer. With private plans, you target the customer's Azure tenant ID, which is much easier to find (and can be done programmatically).