Discount Sharing Group Across Billing Account

Hi All,

Following is what I am trying to achieve:

Scenario:

There are two billing accounts BA1 and BA2 and one customer account CA. Accounts BA1 and BA2 have /service/telephony. It is required to accumulate the usages in BA1 and BA2 respectively and sum these usages in CA.

I have created one Discount sharing group in BA1 and one in BA2. There is also one discount sharing group in CA (This account does not have any service). The telephony services in BA1 are members of the discount sharing group in BA1 (owner is the account) and also members of discount sharing group in CA. The telephony services in BA2 (owner is the account) are members of the discount sharing group in BA2 and also members of discount sharing group in CA.