All data are fictional public teaching data. Use only supplied records. Report by transaction_date month, KRW, confirmed and refund records only. Deduplicate invoice_id; if fields conflict, hold until a correction ledger resolves them. Blank amount is unknown, not zero. Invalid dates need evidence. Keep source_row and correction IDs in each decision. Never alter or publish source files.
NEW CASE: independent November 2026 report, not October. Apply the rules to these new rows. Return accepted invoice IDs, each exclusion, positive total/refund/net, and a Korean+English report.
[unseen]
source_row,invoice_id,transaction_date,amount_krw,status
N01,N201,2026-11-02,210000,confirmed
N02,N202,2026-11-03,90000,confirmed
N03,N202,2026-11-03,90000,confirmed
N04,N203,2026-11-04,-30000,refund
N05,N204,2026-10-31,50000,confirmed
N06,N205,2026-11-07,,confirmed
N07,N206,2026-11-08,60000,pending
N08,N207,2026-11-10,80000,confirmed

[corrections]
evidence_id,invoice_id,field,value,reason
NL1,N205,amount_krw,120000,Fictional receipt confirms missing amount
