TMF635 specifically relates to prepay buckets or balances, and the operations there support all the common manipulations needed on a prepay balance (topping up, reserving, transferring, etc.).
TMF677 is a read-only API that gives a wider picture of the customer's usage.
The two APIs do not overlap, at least not intentionally.
Hope it helps
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Jonathan Goldberg
Amdocs Management Limited
Any opinions and statements made by me on this forum are purely personal, and do not necessarily reflect the position of the TM Forum or my employer.
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