qualifier number + unit a measured amount

instalment count

How many payments an instalment financing plan is split into — '12 monthly payments'. A qualifier of `installment_plan` (cardinality one), a dimensionless repetition count (CountUnits — counts payments, an abstract 'times', sharing the unit of interval_count/phase_iterations rather than the physical-item each/pair/dozen of QuantityUnits). Combined with the per-payment amount and any down-payment, it implies the financing cost; a quoted APR is therefore derivable (A10) and, being lender/checkout-set, per-offer (A6) — not stored.

Instalment count is a measured figure.

It is a qualifier of instalment plan — it has meaning only inside a instalment plan statement, one per statement, never on its own. It belongs with instalment plan to subscription & financing — one facet of a product.

It is answered inside every instalment plan statement, not as a standalone question on a kind.

answered with: №number + unit — a number paired with a unit drawn from an exhaustive unit vocabulary.
value domain: Count Units — the vocabulary its answers are drawn from.
qualifier of: instalment plan — one per statement — it has meaning only inside that host's statement.

Answered inside every instalment plan statement — not a standalone slot on any kind.