Included in the usage-billing shortlist and not taken past documentation. Public material did not show a way to honor the signed terms while leaving the existing meter and finance-issue path in place.
- What worked
- Useful only as a negative check that newer usage billers still assume vendor-side rating.
- What got in the way
- No documented fit for on-box raw records, signing-date FX, or restatable months after invoices are already raised elsewhere.