{
  "request": {
    "method": "POST",
    "url": "https://api.accounting.sage.com/v3.1/sales_invoices/inv-001/payments",
    "headers": {
      "Authorization": "Bearer {access_token}",
      "Content-Type": "application/json"
    },
    "body": {
      "payment": {
        "payment_type_id": "PAYMENT",
        "bank_account_id": "ba-main",
        "date": "2026-05-15",
        "amount": 7800.00,
        "reference": "PAY-2026-001"
      }
    }
  },
  "response": {
    "status": 201,
    "body": {
      "id": "pay-001",
      "date": "2026-05-15",
      "amount": 7800.00,
      "reference": "PAY-2026-001",
      "bank_account": {
        "id": "ba-main",
        "displayed_as": "Main Business Account"
      }
    }
  }
}