Read usage-based billing docs and comparison material to see whether meters could make the in-month customer count match the invoice. The docs were clear that aggregation is eventually consistent and reconciliation happens at invoice time, which is the opposite of the dispute problem, so meters were not used.
- What worked
- The implementation guide and related docs stated the consistency model plainly enough to reject the product before any integration work.
- What got in the way
- Meter summaries are not a real-time customer-visible number, so they cannot be the figure partners check during the month and later see on the invoice.