A cancelled subscription still reported an upgrade as allowed and priced it, so
a caller trusting that would have provisioned and billed a customer who had
already left. And any term string other than the two we support was silently
priced monthly while keeping the unknown value — a subscription whose price and
billing period disagree. Both are refused now.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Flooring the remaining time made an upgrade with under a day left cost nothing,
and an upgrade requested after the period had ended cost nothing while being
applied immediately — the bigger plan for free. Remaining time now rounds up
while any service is left, and an expired period defers the change to the next
term instead of pricing it at zero.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Once the term is over, the downgrade has to be allowed — otherwise the job that
is supposed to carry it out never can, and the change waits forever for a date
that has already passed.
And a grandfathered plan can be cheaper than the smaller plan costs today, which
made the goodwill credit negative: an invoice for the privilege of downgrading.
Clamped to zero.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
With grandfathered prices the comparison inverts: a business plan bought when
it cost less than today's team plan would have treated a move to team as an
upgrade — charged immediately, while the customer loses resources. The plan's
rank is frozen with the rest of the snapshot and decides the direction; prices
only decide the amount.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The plan catalogue describes what we sell today; a customer who signed up last
year bought last year's terms. Every commercially relevant condition — price,
quotas, seats, the hardware behind the plan — is now frozen onto a subscription
at signup, and the model refuses to let any of it be rewritten afterwards. A
price rise applies to new subscriptions and cannot reach back into an existing
contract.
PlanChange holds the two rules, computed against the frozen price rather than
today's catalogue:
- Upgrading is immediate and pro rata: the new plan for the days left in the
paid term, minus what the old plan was worth over those same days. On the
last day of a month that is one day's difference, not a month's.
- Downgrading waits for the end of the term. A yearly customer bought a year
and can move down when it is up; a month is a month. A mid-term downgrade is
a goodwill decision, not a self-service button, and its credit covers only
the unused part of the difference.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>