Use the result as a planning review. Confirm the source quantities, units and supplier dates in your maintained inventory system before acting. ChatGPT can help organize the supplied schedule; a conversation does not establish that stock exists, that a supplier will deliver on time, or that a purchase has been authorized.
Bring the dates behind the totals
For each item and location, include usable starting stock, known allocations, dated demand, outstanding receipt quantities and expected availability dates. State whether “arrival” means delivery to the building or release for use after inspection. A box at the receiving dock may not yet be available for production.
Keep units explicit. Ten cases and ten individual components are different quantities unless the pack conversion is supplied. If reservations are already represented in the demand schedule, do not subtract them from starting stock again.
Business Queensland's stock-control guidance identifies demand, order quantities, minimum levels and replenishment time as relevant stock decisions. Here, focus on the timing of supplied events rather than inventing a reorder threshold or a demand forecast.
Trace an original planning example
This fictional exercise concerns component C17 at Store A, counted in individual pieces. At the start of day 1, 12 usable pieces are available. There are no other allocations or movements. Requirements consume six pieces on day 2, eight on day 5 and six on day 8. An open purchase order has 10 pieces expected to become usable at the start of day 6.
For the calculation, use signed projected balance = previous projected balance + usable receipts − requirements. All requirements remain in the schedule even if the balance turns negative. That negative value records an unmet requirement; it is not an observation of negative physical stock.
| Event | Receipt | Requirement | Projected balance |
|---|---|---|---|
| Start of day 1 | Starting stock 12 | None | 12 |
| Day 2 requirement | 0 | 6 | 6 |
| Day 5 requirement | 0 | 8 | -2 |
| Start of day 6 receipt | 10 | 0 | 8 |
| Day 8 requirement | 0 | 6 | 2 |
Total supply is 12 + 10 = 22 pieces. Total demand is 6 + 8 + 6 = 20 pieces. The final projected balance of two is correct under the assumptions, but it conceals the earlier gap: only six pieces are available against the eight-piece day 5 requirement.
Keep that two-piece exception attached to day 5. The day 6 receipt arrives after the requirement. A later positive balance does not prove that the earlier work was completed on time.
Compare timing changes without inventing a commitment
As a hypothetical alternative, if all 10 pieces became usable at the start of day 5 before its requirement, the balance would move from six to 16, then to eight after the requirement. That removes this fixture's projected gap. It does not establish that the supplier can deliver a day earlier.
If receipt and demand share a date but no sequence is known, show the ambiguity. Receipt-before-demand and demand-before-receipt can produce different intraday availability. Ask the planner for the actual cutoff rather than silently choosing the more favorable order.
Other responses might involve a permitted transfer, a changed work sequence or a partial delivery. Their feasibility, costs and approvals require real information. The useful first output is the dated exception and the evidence needed to assess options.
Copy a dated-stock review prompt
OpenAI's prompting documentation recommends defining the context and desired result. For inventory work, specify the meaning of the quantities as well as the table columns.
Review this inventory schedule for timing gaps. Do not place orders.
Snapshot date/time and maintained source: [ENTER]
Item, location and unit: [ENTER]
Usable opening stock and its definition: [ENTER]
Allocations already subtracted, if any: [ENTER]
Dated requirements with IDs and quantities: [PASTE]
Open receipts with IDs, outstanding quantities and usable dates: [PASTE]
Same-day event order, lead-time and inspection rules: [ENTER OR UNKNOWN]
Show a chronological ledger: opening balance, each requirement and
usable receipt, and resulting signed projected balance. Preserve source
IDs. Check that reservations, open orders and partial receipts are not
counted twice. Separate missing dates from confirmed dates.
Identify the first negative balance and the unmet amount at that point.
Explain that a negative projection is unmet demand, not physical stock.
Show totals too, but do not let a positive final total erase earlier gaps.
For proposed timing changes, label them hypothetical and state which
supplier or operational facts need confirmation. Do not invent demand,
delivery promises, units, approvals or successful purchases.
Give the planner a specific exception
For the fixture, the review note is: “C17, Store A, day 5: eight pieces required, six projected available before the receipt, leaving two unmet. PO quantity 10 is expected usable day 6. Confirm the demand deadline and usable receipt date; assess an approved way to cover the earlier gap.”
That note tells someone what to investigate. “Order more stock” does not: a larger order arriving on day 6 still misses day 5. Check the actual need date before choosing a quantity response.
Use the inventory dashboard guide for a dated snapshot of stock and supplied thresholds. If the starting quantity itself is disputed, the inventory-count procedure addresses count and movement reconciliation first.
Keep the checked schedule and assumptions with the source references. Record any confirmed date or quantity change in the maintained inventory system, then rerun the timeline so the next review uses the revised evidence.