The graphic shows that the services S1, S2, and S3 are each tracked under a balance group specific to their account. S1 is tracked under the account-level balance group for the parent account (B A1). This balance group points to the primary billing profile on BA1 (B A1-B P1).
S2 is tracked under a balance group for one subordinate account (S A1) and S3 is tracked under a balance group for the other subordinate account (S A2). Dummy /billinfo objects under the subordinate accounts are created for the subordinate account balance groups. The dummy /billinfo object for S A1 points to a second billing profile (B A1-B P2) on BA1, and the dummy /billinfo object for S A2 points to a third billing profile (B A1-B P3) on BA1.