{"id":"ops-reorder-point-after-lead-time-change","audience":"operations","category":"operations-work","track":"operations","technique":"verification","level":"intermediate","title":"Recalculate a reorder point after the lead time grows","free":false,"task":"Write a prompt for plain text with exactly four lines: \"Old reorder point:\", \"New reorder point:\", \"Change:\" and \"Action:\". Reorder point is daily use times lead time plus safety stock. Show the math on the first three lines. Action says ORDER NOW if on hand is at or below the new reorder point, otherwise HOLD, and that the planner confirms. Under 70 words.","materialLabel":"Your material (attached to your prompt automatically)","material":"PLANNER UPDATE - Item 4410 (hydraulic filter)\n\nAverage daily use: 30.\nSafety stock: 60.\nLead time was 5 days. The supplier notified us that lead time is now 8 days because of a plant move.\nOn hand today: 280.\n\nReorder point = daily use x lead time + safety stock.\nA warehouse lead wrote, \"We're at 280 and the old reorder point was 210, so we're fine.\" The planner confirms all reorder decisions.\n\nOther notes: The supplier ships once a week on Mondays, and the item is used on all three production lines. A stockout on this filter stops the lines, so reorder points are reviewed whenever a lead time changes. The old figures in the planning sheet have not been updated yet. Order quantity is a separate decision made by the planner and is not part of this exercise.","rules":[{"type":"plainText"},{"type":"maxWords","max":70}],"promptHints":[{"label":"Quotes the four labels","patterns":["old reorder point:","new reorder point:","change:","action:"]},{"label":"Gives the formula","patterns":["daily use","lead time","safety stock"]},{"label":"Uses the new lead time","patterns":["8-day","new lead time","8 days"]},{"label":"Defines the action","patterns":["order now","hold","at or below","planner confirms"]},{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no headings"]}],"mistakes":[{"title":"Using the old reorder point","why":"The AI agrees with the warehouse lead that 280 is fine.","fix":"Say: \"Use the new 8-day lead time for the new reorder point.\"","checks":["r1"]},{"title":"Skipping the math","why":"The AI states 300 without working.","fix":"Say: \"Show the math on the first three lines.\"","checks":["r1"]},{"title":"Wrong lines","why":"The AI writes a paragraph.","fix":"Quote the four labels.","checks":["r0","r2"]},{"title":"Getting markdown back","why":"AI adds bold, headings and bullets by default, which show up as stray symbols where this is pasted.","fix":"Say \"plain text, no bold, no headings, no asterisks\".","checks":["plainText"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting and usually runs long, so a vague \"keep it short\" lands over the limit.","fix":"Cap each part instead of the total, for example \"each line under 15 words\".","checks":["maxWords"]}],"hint":"Give the formula, both lead times and the action rule.","mission":"Recalculate the reorder point now that lead time has grown.","musts":["Show the math","ORDER NOW at or below","Planner confirms"],"rubricLabels":["There are exactly four lines starting Old reorder point:, New reorder point:, Change: and Action: in that order","Old reorder point shows 30 x 5 + 60 = 210, New reorder point shows 30 x 8 + 60 = 300, and Change shows +90","Action says ORDER NOW because 280 on hand is below the new reorder point of 300, and says the planner confirms"]}