{
  "synthetic": true,
  "scope": "Editorial teaching case, not a bank export, import template, vendor test or accounting recommendation",
  "topic_id": "TP-136",
  "invoice_EUR": "100.00",
  "bank_received_EUR": "98.00",
  "independent_fee_receipt_EUR": "2.00",
  "unproven_gap_EUR": "2.00",
  "control": "Arithmetic agrees in both cases; only the documented fee case has evidence for the cause"
}