generated: '2026-07-23'
method: derived
source: graphql/highnote-schema.graphql
description: >-
  Entity-relationship graph derived from the Highnote GraphQL schema types, connection fields,
  and id-reference inputs. Highnote is Relay-style: entities implement the Node interface and are
  linked through *Connection fields and by id references in mutation inputs.
entities:
  - name: CardProduct
    implements: [Node]
    detail: Debit/credit/prepaid/fleet/charge product template that governs issued cards.
  - name: AccountHolderCardProductApplication
    implements: [Node]
    detail: An account holder's application to a card product (gates issuing/credit/money movement).
  - name: PersonAccountHolder
    implements: [Node, AccountHolder]
  - name: USBusinessAccountHolder
    implements: [Node, AccountHolder]
  - name: FinancialAccount
    implements: [Node]
    detail: Ledgered account (funding or payment-card account) with balances.
  - name: PaymentCard
    implements: [Node]
    detail: Virtual/physical/tokenized card assigned to a financial account.
  - name: PaymentTransaction
    implements: [Node]
    detail: Authorization/clearing/reversal/refund record against the ledger.
  - name: FundsTransfer
    implements: [Node]
    detail: ACH/wire/RTP/push-to-card/internal transfer.
  - name: CollaborativeAuthorizationEndpoint
    implements: [Node]
  - name: WebhookNotificationTarget
    implements: [Node]
  - name: NotificationEvent
    implements: [Node]
relationships:
  - from: CardProduct
    to: AccountHolderCardProductApplication
    type: has_many
    via: applications
  - from: AccountHolderCardProductApplication
    to: CardProduct
    type: belongs_to
    via: cardProductId (CreateAccountHolderCardProductApplicationInput)
  - from: AccountHolderCardProductApplication
    to: PersonAccountHolder
    type: belongs_to
    via: accountHolderId
  - from: FinancialAccount
    to: AccountHolderCardProductApplication
    type: belongs_to
    via: applicationId (IssueFinancialAccountForApplicationInput)
  - from: FinancialAccount
    to: PaymentCard
    type: has_many
    via: paymentCards
  - from: PaymentCard
    to: FinancialAccount
    type: belongs_to
    via: financialAccountId (AssignPaymentCardToFinancialAccountInput)
  - from: PaymentTransaction
    to: PaymentCard
    type: belongs_to
    via: paymentCardId (AuthorizePaymentCardInput / ChargePaymentCardInput)
  - from: FundsTransfer
    to: FinancialAccount
    type: belongs_to
    via: fromFinancialAccountId / toFinancialAccountId (InitiateTransferInput)
  - from: WebhookNotificationTarget
    to: NotificationEvent
    type: has_many
    via: subscriptions -> notificationEvents
  - from: CollaborativeAuthorizationEndpoint
    to: CardProduct
    type: belongs_to
    via: enableCollaborativeAuthorizationFeature(cardProductId)
identity:
  pattern: Relay global object identification
  detail: Every entity implements Node; node(id) resolves any entity; object type read from __typename; IDs are prefixed opaque strings.
  docs: https://docs.highnote.com/docs/developers/api/entity-ids-and-object-types