{"id":"acct-early-pay-discount-entry-two-invoices","audience":"accounting","category":"finance-work","track":"finance","technique":"constraints","level":"beginner","title":"Check two invoices for the early-pay discount and write the entry","free":false,"task":"You're paying two invoices on Terms 2/10, net 30 (2% off if paid within 10 days of the invoice date; day 10 still counts). Write a prompt for plain text with lines starting \"Invoice A:\", \"Invoice B:\", \"Entry A:\" and \"Check:\". For each invoice say whether it qualifies and the amount to pay, with the math. Entry A gives the lines for the discounted payment. Check says debits equal credits. Under 90 words.","materialLabel":"Source material (attached to your prompt automatically)","material":"EARLY-PAY DISCOUNT REVIEW - payment date Oct 20, 2026\n\nTerms for both vendors: 2/10, net 30.\n\nInvoice A - Lumen Paper: dated Oct 10, amount $10,000\nInvoice B - Gray Tools: dated Oct 8, amount $6,000\n\nAccounts: Accounts Payable (2000); Cash (1010); Purchase Discounts (5090)\n\nNote: both invoices were approved on Oct 15. The payment will be made by ACH on Oct 20. Gray Tools called to ask if the discount still applies since the check was \"in the mail\"; no payment has been made. Purchase discounts are recorded as a credit when the invoice is paid, at the full invoice amount in payables.","rules":[{"type":"plainText"},{"type":"maxWords","max":90}],"promptHints":[{"label":"Names the four lines","patterns":["invoice a","invoice b","entry a","check"]},{"label":"Counts days from invoice date","patterns":["invoice date","10 days","day 10"]},{"label":"Applies 2% correctly","patterns":["2%","x 2%"]},{"label":"Names the accounts","patterns":["2000","1010","5090"]},{"label":"Caps length","patterns":["\\d+\\s*words","under \\d+"]}],"mistakes":[{"title":"Giving B the discount","why":"The AI applies 2% to both.","fix":"Say: \"Count days from the invoice date; day 10 counts, day 12 does not.\"","checks":["r1"]},{"title":"Wrong entry sides","why":"The AI debits cash or books the discount as expense.","fix":"Add: \"Debit AP at full amount; credit Cash and Purchase Discounts.\"","checks":["r2"]},{"title":"Missing labels","why":"The AI writes a table.","fix":"Add: \"Four lines with these exact labels.\"","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"]},{"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 part short.","checks":["maxWords"]}],"hint":"Count the days from the invoice date for each invoice, then book the discount as a separate credit.","rubricLabels":["The four lines start Invoice A:, Invoice B:, Entry A: and Check: in that order","Invoice A qualifies (10 days from Oct 10) and pays $10,000 - ($10,000 x 2%) = $9,800; Invoice B does not qualify (12 days from Oct 8) and pays $6,000","Entry A debits Accounts Payable 2000 for $10,000, credits Cash 1010 for $9,800 and credits Purchase Discounts 5090 for $200, and Check shows $10,000 = $9,800 + $200"]}