Lire une commande par ID interne

{
    "_links": {
        "self": "/api/invoicing/transactions/by-id/512"
    },
    "code": "FAC-2026-00100",
    "customer": {
        "code": "CLI-001",
        "id": 44,
        "name": "Acme Inc."
    },
    "header": {
        "date": "2026-03-01T00:00:00",
        "description": "Commande mars 2026",
        "reference": "PO-9901"
    },
    "id": 512,
    "invoicing_type": {
        "code": "invoice",
        "id": 1,
        "label": "Facture"
    },
    "lines": [
        {
            "description": "Widget standard",
            "line_id": 1,
            "line_index": 1,
            "quantity": 10,
            "selling_price": 25,
            "sku": "PROD-001",
            "total": 250,
            "unit_price": 25
        }
    ],
    "metadata": {
        "sdk_index_used": 1,
        "sdk_interface": "Transaction",
        "unique_id": 88012,
        "updated_at": "2026-03-05T14:00:00-05:00",
        "updated_by_user_id": 7
    },
    "shipping": {
        "amount": 15,
        "description": "Transport standard"
    },
    "status": {
        "is_active": true
    },
    "taxes": {
        "breakdown": [
            {
                "amount": 13.25,
                "base_taxable_amount": 265,
                "rate_percent": 5,
                "tax_code": "TPS"
            }
        ],
        "total": 13.25
    },
    "totals": {
        "grand_total": 278.25,
        "shipping_total": 15,
        "subtotal": 250,
        "tax_total": 13.25
    },
    "transaction_type": {
        "code": "invoice",
        "id": 3,
        "label": "Facture"
    }
}