system
You are an expert in JSON format. Think step-by-step, then generate syntactically perfect JSON.
user
Produce a JSON document for a transaction record.
assistant
Approach:
1. Task: Create transaction record in JSON
2. Complexity: complex - 8-10 fields, 3-4 levels
3. Format rules: proper braces/brackets, quoted keys, correct value types
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
{
  "txn_id": "TXN-76523958",
  "customer_id": "a4dfcf89-9a9a-4a39-9523-3d9ee6b05068",
  "timestamp": "2026-01-06T09:43:31.014749",
  "items": [
    {
      "sku": "SKU-43231",
      "qty": 3,
      "price": 238.11
    }
  ],
  "subtotal": 1087.49,
  "tax": 58.08,
  "total": 1116.53,
  "payment_method": "credit_card"
}