CHW-4415 BillingSeatsBelowMembers
seats must be at least the organization's current member count; remove members or buy more seats
Default message: seats must be at least the organization’s current member count; remove members or buy more seats
HTTP status:400(client)
Problem. /api/billing/checkout rejected the seats field for
the Team plan. Cause. The requested seat count is lower than the
organization’s current member count (the platform-operator seat is not
counted; CI/service tokens are not members). Fix. Buy at least as
many seats as you have members, or remove members first. HTTP 400.