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Account (you)
├── OAuth Clients
├── Users (your team)
├── Billings
├── Card Issuers (enabled list)
├── TPAs
│   ├── Signatories (email → eID sign)
│   ├── Legal Text (snapshot)
│   └── Signed Document (PDF)
└── Organizations
    ├── reference_id ← YOUR ID
    ├── Webhooks
    │   ├── Headers (custom)
    │   ├── Groups (buyer-party filter)
    │   └── Events (delivery log)
    └── Card Holders
        ├── reference_id ← YOUR ID
        ├── PDPC (email → eID consent)
        └── Cards (from issuer)
            └── Transactions
                ├── TransactionStates
                ├── Receipts
                ├── TrueVAT
                ├── LineItems
                └── EnvironmentalImpact

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Entity details

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Account

Your partner account. Created at registration. Contains billing, OAuth clients, enabled issuers.

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Organization

One of your clients. Links to a TPA. Has its own webhook config. Key fields: id, reference_id, tpa_id, account_id, name

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Card Holder

A person. Links to organization. Has PDPC consent. Key fields: id, reference_id, organization_id, meta.signed, meta.pdpc_url

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TPA

Legal agreement per client company + card issuer combo. Statuses: pending-signatures → pending-activation → activated

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Webhook

Per-organization event subscription. Must pass challenge before active=true. Key fields: url, secret, active, enabled, event boolean flags, authentication_type

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Transaction

One purchase. Same id across all states. Comes via webhook, not primarily via API query.