TermsPricingOption
One configured pricing row of a service item.
A service item carries one pricing row per period, and a revenue item points
at a specific one through service_item_pricing_id. Billing-frequency
editability is therefore per pricing row, not per service item: two lines of
the same service on different periods can legitimately differ. The panel
resolves an existing line by matching its own service_item_pricing_id, and
the Add-service flow picks a period from this list.
- isType: boolean
Billing Frequency Editable requiredWhether the panel may edit billing frequency and billing start date. True only when this pricing row leaves the frequency open — unset or CUSTOM
- pricingType: string
Id requiredPricing row ID (pricing.id)
- billingType: integernullable
Frequency Configured billing frequency ID (FK to billing_frequency)
- serviceType: integernullable
Item Periods Service item period ID (FK to service_item_periods)

