{"id":"acct-card-processor-deposit-check","audience":"small-business","category":"finance-work","track":"finance","technique":"verification","level":"intermediate","title":"Reconcile a card processor deposit and keep the gap unexplained","free":false,"task":"You're checking one day's card processor deposit. Write a prompt for plain text with lines starting \"Fees:\", \"Expected deposit:\", \"Actual deposit:\" and \"Difference:\", each with the math. Fees are the percentage on gross sales plus the per-transaction fee. Don't explain the difference with a guess from the notes; call it unexplained. Under 70 words. No bullets or numbering.","materialLabel":"Processor statement and notes (attached to your prompt automatically)","material":"CARD PROCESSOR CHECK - Maple Row Hardware, Nov 3, 2026\n\nGross card sales: $10,000.00 (80 transactions)\nRefunds issued to cards: $200.00\nProcessor fees: 2.9% of gross sales plus $0.30 per transaction (fees are not refunded on refunds)\nProcessor deposit to our bank on Nov 5: $9,436.00\n\nExpected deposit = gross sales - refunds - fees.\n\nNotes: the owner thinks the $50 gap might be a chargeback, because a customer disputed a charge last week, but the processor's statement doesn't list a chargeback yet. The bookkeeper suggests booking any gap to 'bank fees' so the account ties.","rules":[{"type":"plainText"},{"type":"maxWords","max":70},{"type":"maxBullets","max":0}],"promptHints":[{"label":"Names the four lines","patterns":["fees:","expected deposit","actual deposit","difference"]},{"label":"Gives the fee formula","patterns":["2\\.9%","0\\.30"]},{"label":"Gives the expected formula","patterns":["gross - refunds - fees"]},{"label":"Bans a cause or plug","patterns":["(do not|don'?t).*(cause|book)"]},{"label":"Caps length","patterns":["\\d+\\s*words","plain"]}],"mistakes":[{"title":"Naming the chargeback","why":"The AI says the $50 is probably a chargeback.","fix":"Add: \"Call it unexplained; do not name a cause.\"","checks":["r2"]},{"title":"Plugging to bank fees","why":"The AI agrees to book the gap to bank fees.","fix":"Add: \"Do not suggest booking the difference anywhere.\"","checks":["r2"]},{"title":"Forgetting the per-transaction fee","why":"The AI computes only 2.9% = $290.","fix":"Say: \"Fees = 2.9% x gross + 80 x $0.30.\"","checks":["r0"]},{"title":"Markdown extras","why":"The AI adds bold labels, headings and a closing note.","fix":"Say: \"Plain text, no bold. Output only the lines asked for.\"","checks":["plainText","maxBullets","r1"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting and runs past word limits.","fix":"Ask for fewer words than the real cap and keep each line short.","checks":["maxWords"]}],"hint":"The gap is tempting to explain or plug. Give the fee math and the 'unexplained' instruction.","rubricLabels":["The line starting \"Fees:\" shows 2.9% x $10,000 = $290 plus 80 x $0.30 = $24, total $314","The line starting \"Expected deposit:\" shows $10,000 - $200 - $314 = $9,486 and the line starting \"Actual deposit:\" shows $9,436","The line starting \"Difference:\" shows $9,436 - $9,486 = -$50 and calls it unexplained, with no mention of a chargeback as the cause and no suggestion to book it to bank fees"]}