> ## Documentation Index > Fetch the complete documentation index at: https://docs.hyperline.co/llms.txt > Use this file to discover all available pages before exploring further. # Glossary > Learn more about Hyperline's key concepts and their definitions Is something still unclear? Don't hesitate to [reach out to our team](mailto:support@hyperline.co) if you need additional support. ## Core Entities | Term | Definition | | ------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------- | | **Bundle product** | A product that groups several existing products as components and sells them as a single unit. Distinct from the "bundle" pricing model. | | **Customer** | An individual or company that purchases your products/services. Has billing information, payment methods, and can have multiple subscriptions. | | **Invoice** | A document requesting payment from a customer. | | **Product** | A billable item in your catalog. | | **Quote** | A sales proposal sent to customers before creating a subscription. Can be signed electronically or manually. | | **Subscription** | A recurring billing agreement between you and a customer, defining which products are included, pricing, and billing schedule. | ## Subscription | Term | Definition | | ------------------------- | -------------------------------------------------------------------------------------------------------------------------- | | **Activation strategy** | How a subscription becomes active. | | **Cancellation** | Ending a subscription. | | **Contract terms** | Terms governing the subscription contract including start/end dates, duration, and renewal settings. | | **Proration** | Calculating partial charges when changes occur mid-billing period. | | **Renewal** | When a subscription automatically continues for another term. | | **Subscription phase** | A distinct period within a subscription with its own products and terms (e.g., trial, standard). | | **Subscription template** | A pre-configured subscription setup that can be reused for multiple customers or contexts (currency/country combinations). | | **Subscription update** | A pending change to a subscription (add/remove products, change prices, apply coupons). | | **Trial period** | A free or discounted phase before regular billing begins. | ## Pricing & Billing | Term | Definition | | -------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Billing interval** | How often a customer is charged (e.g., monthly, yearly, weekly). | | **Commitment period** | Minimum contract duration for a subscription (e.g., 1-year commitment). | | **Price book** | A collection of custom price configurations that can be assigned to specific customers for special pricing. | | **Price configuration** | Defines how a product is priced. Includes currency, billing interval, and pricing model. | | **Pricing model - BPS (Basis Points)** | Percentage-based pricing typically used for payment processing fees. | | **Pricing model - Bulk** | A single price per unit is applied based on the total usage tier (e.g., 150 units all priced at the 101-200 tier rate). | | **Pricing model - Bundle** | Predefined quantity/price packages on a seat or credit product (e.g., 1000 credits for $50, or 10 seats for $180). Distinct from a Bundle product, which is a product type. | | **Pricing model - Fee** | A fixed amount charged per billing period (e.g., \$99/month). | | **Pricing model - Packaged** | Units are sold in packages/bundles (e.g., \$100 per 1000 API calls). | | **Pricing model - Volume** | Price per unit decreases as usage increases through tiers (e.g., first 100 units at $0.10, next 100 units at $0.08). | ## Usage & Metering | Term | Definition | | -------------------------- | ------------------------------------------------------------------------------------------------------------------------- | | **Billable event** | A usage record sent via API that represents a customer action to be metered (e.g., API call, message sent, storage used). | | **Committed count** | A guaranteed minimum usage amount that will be charged regardless of actual usage. | | **Metering configuration** | Defines how billable events are counted or summed for billing. | | **Metering filter** | Conditions applied to narrow down which events count toward billing (e.g., only count events where `region = 'us'`). | | **Usage interval** | The period over which usage is measured before billing (can differ from billing interval). | ## Credits & Wallet | Term | Definition | | ------------------------- | ------------------------------------------------------------------------------------------------ | | **Credit transaction** | A record of credits being added, consumed, or expired. | | **Credits** | Pre-purchased units that can be consumed against usage-based products. Can expire. | | **Low balance threshold** | A configurable threshold that triggers notifications when credits or wallet balance falls below. | | **Top-up** | Adding credits or wallet balance to a customer's account. | | **Wallet** | A prepaid balance account for a customer that can be used to pay invoices. | | **Wallet transaction** | A record of funds being credited or debited from a customer's wallet. | ## Discounts & Promotions | Term | Definition | | ------------------- | ------------------------------------------------------------------------------------------------- | | **Coupon** | A discount that can be applied to subscriptions. Can be a fixed amount or percentage off. | | **Coupon duration** | How long a coupon applies. | | **Coupon repeat** | Controls coupon application frequency. | | **Promotion code** | A shareable code that customers can use to redeem a coupon. Can have usage limits and expiration. | ## Documents | Term | Definition | | --------------------- | ------------------------------------------------------------------------------------------------------------- | | **Checkout page** | A hosted payment page where customers can enter payment details and complete a purchase. | | **Checkout session** | A hosted page experience for customers to complete payment and subscription activation. | | **Contract clause** | Reusable text blocks that can be included in contracts. | | **Contract template** | Legal document templates that can be attached to quotes. | | **Credit note** | A document issued to reverse or reduce a previously issued invoice. | | **Customer portal** | A self-service interface where customers can view invoices, manage subscriptions, and update payment methods. | | **Invoice line item** | An individual charge on an invoice representing a product or adjustment. | | **Purchase order** | A customer's reference number for their internal tracking. | | **Quote template** | Reusable configuration for quotes including terms, display options, and attached documents. | ## Approvals | Term | Definition | | ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------ | | **Approval request** | A request for approval created when a quote matches an approval workflow. Tracks the approval status and history. | | **Approval step** | A stage in an approval workflow where designated approvers must approve or reject before proceeding. | | **Approval workflow** | A configurable set of rules and steps that determine when and how quotes require approval based on conditions like amount or products. | | **Approver requirement** | Whether any single approver or all designated approvers must approve a step (`any` or `all`). | | **Workflow condition** | A rule that determines if a workflow applies to a quote (e.g., total amount greater than €10,000, specific products, discount percentage). | | **Workflow priority** | A number used to select between multiple matching workflows. Higher priority workflows are selected first. | ## Payments | Term | Definition | | ---------------------------------- | ------------------------------------------------------------------------------------------------------------------- | | **Bank account** | Customer's bank account details used for manual bank transfer payments. | | **Chargeback** | When a customer disputes a charge with their bank, resulting in reversed payment. | | **Dunning** | The process of automatically retrying failed payments and communicating with customers to collect overdue invoices. | | **Grace period** | A delay between invoice creation and payment collection, allowing review or manual adjustment. | | **Payment method** | How a customer pays (card, direct debit, bank transfer, etc.). | | **Payment method state** | Current status of a payment method. | | **Payment service provider (PSP)** | A third-party service that processes payments (e.g., Stripe, GoCardless, Mollie). | | **Transaction** | A payment attempt or successful charge against an invoice. | ## Organization | Term | Definition | | -------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | | **Client** | Your account/organization in Hyperline (the seller). | | **Custom field** | User-defined properties that can be added to customers, subscriptions, products, plans, or quotes. | | **Invoicing entity** | A legal entity that issues invoices (your company or subsidiaries). Has its own branding, address, tax ID, and numbering sequences. | | **Tax ID** | A tax identification number (e.g., VAT number) for a customer or invoicing entity, used for tax compliance and validation. | | **Tax rate** | VAT/sales tax rates applied to invoices. | | **Tax scheme** | How tax is applied to an invoice. | ## Analytics & Reporting | Term | Definition | | -------------------------------------- | --------------------------------------------------------------------------------- | | **ARPA (Average Revenue Per Account)** | ARR divided by the number of active customers. | | **ARR (Annual Recurring Revenue)** | The value of recurring revenue normalized to a yearly amount. | | **Churn** | When customers cancel their subscriptions or reduce spending. | | **Contract value** | Total value of a subscription over its full contract term. | | **Estimated ARR** | Projected annual revenue from a subscription including variable/usage components. | | **MRR (Monthly Recurring Revenue)** | The value of recurring revenue normalized to a monthly amount. | ## Integrations | Term | Definition | | --------------- | ------------------------------------------------------------------ | | **External ID** | Your system's identifier for a customer, used for mapping records. |