ANSWER KEY - customer 09 (WRONG copy)
Document: Fee invoice, titled "Tax Invoice: Fees and Charges" (FEE_INVOICE_163)
File: 04_fee_invoice/fee_invoice_customer_09_wrong.pdf (1 page)
Customer: Kavya Chopra   Lender: Ulmarin Finance (fictional)

Error type: WRONG_FEE - the fee is wrong.
Page: 1
Field: the "Fee assessed" field under "Charge"
Correct value: ₹ 9.05
Printed value: ₹ 8.05

How it can be caught from this customer's documents:
The fee prints ₹ 8.05, but the GST line of the same invoice is still charged on a taxable value of ₹ 9.05, and the charge's terms in the schedule of charges of the KFS, applied to the base printed on the invoice (₹ 452.58), also give ₹ 9.05 (to the paisa). No other published document of this customer prints ₹ 9.05 (searched).

Engine record:
  corruption id COR_B6EB6B1C68; mode ISOLATED (only this element was changed; nothing else was adjusted to match)
  reference detector rules whose finding names this field, with the full observation set (the documents and the event feed): charge_lines, fee_policy, invoice_feed
  ... and reading only this customer's nine published documents: fee_policy

Every figure in this pack comes from a simulated ledger; this one was altered on purpose for training and testing.
