Sourcing DeskLead-Time Assumptions: How to State a Target Date Without Making It a Promise
A target date stops being a promise the moment you attach it to its conditions. Rather than sending "we need delivery by [date]", send the milestone the date points to, what must be true before that milestone can start, who supplies that input, and the unknowns that would move the date — then label the figure "target" in writing and ask the supplier to confirm only the milestones they can actually date today.
The rest of this brief is built around that one move, and the tool is the milestone and unknowns table below.
Why a bare date reads as a promise
A date sent on its own carries no visible conditions, so the supplier reasonably reads it as the outcome you are buying. When it later slips, there is nothing to compare against: you assumed the artwork was approved, they assumed the material was confirmed, and the argument becomes about blame instead of about which condition failed.
Writing the assumptions down protects both sides. The target stays a planning figure you can schedule around, the unknowns stay visible while there is still time to act on them, and each milestone becomes something you can check rather than something you hope for.
It also helps to sort your dates before you send them. Some are genuine targets you are planning around, some are commitments a named party has actually made in writing, and a small number are fixed by something outside the order — a retail launch, an event, a store opening. Only the middle group is a commitment, and mixing the three is how a planning target quietly becomes a promise.
The milestone and unknowns table
The worksheet is deliberately blank. Fill in the rows you control before you send it, leave the supplier's rows empty, and ask them to complete those.
| Milestone | Must be true first | Who provides it | Date being assumed | What would move it | How you'll know it happened |
|---|---|---|---|---|---|
| Brief and specification frozen | |||||
| Quotation and terms accepted | |||||
| Samples, artwork or tooling approved | |||||
| Materials or components available | |||||
| Production slot starts | |||||
| In-process check | |||||
| Packing and labelling finished | |||||
| Delivery at the named place in the agreed trade term | |||||
| Documents handed over |
What each column is for:
- Must be true first — the gate, not the task. If it is not true, the clock has not started.
- Who provides it — you, the supplier, or a third party. Shared rows are the ones that slip.
- Date being assumed — the date you are planning around, clearly marked as an assumption.
- What would move it — the unknown. Name it even if you cannot resolve it yet.
- How you'll know it happened — the evidence you would accept, agreed in advance: a photo, a document, a report, a signed approval.
How to fill it without inventing precision
If you do not know a date, write the trigger instead of a guessed date. "Starts after sample approval" is honest and useful; a guessed date is a hidden assumption that will be treated as a commitment later.
If you want slack in the plan, put it in the table as its own line and say what it is for. Padding every row by an unstated amount hides the buffer from the supplier, and then it disappears the first time someone asks whether the plan can be pulled forward.
Leave cells genuinely empty rather than writing "TBC" everywhere. A short list of real unknowns is easier for a supplier to answer than a long list of placeholders, and the empty rows tell you where you still need input.
Wording the target
These are editorial suggestions for clearer buyer briefs, not legal requirements:
- "Target [milestone] date: _, assuming [your input] is confirmed by _."
- "This is a planning target for our own scheduling. Please mark which milestones you can date today and which stay open."
- "If [unknown] is not resolved by ____, we will revisit the target rather than treat it as missed."
- "Please confirm which of these dates you can commit to, and which remain estimates."
Phrases worth avoiding unless both sides genuinely mean them: "must arrive by", "firm delivery promise", "final deadline", "no exceptions". Each one converts a target into a claim someone has to defend, usually before the unknowns in your own table are resolved.
What the agreed trade term does and does not settle
Per the Incoterms 2020 rules published by the International Chamber of Commerce, the rule you agree allocates delivery, carriage, risk and cost between buyer and seller under that specific rule and the named place. That allocation is about who does what, where, and who bears which cost and risk.
It does not tell you whether the supplier can make your target date, and it is not evidence of product quality or of payment terms. Treat those as separate conversations.
The practical link to your table is narrow but important: your target date should point at the delivery event defined by the agreed rule and its named place, and every earlier milestone stays a commercial assumption you and the supplier own together. When you ask the supplier to confirm the delivery row, also confirm that the named place matches how they normally hand goods over — a mismatch there is a common reason a date is "met" in one reading and missed in another.
Anything contractual, customs-related or regulatory is case-specific and outside this brief; confirm it with the counterparty and your own advisors rather than inferring it from a trade term.
One caution on evidence: a screening result, a document you have reviewed, or a self-declared supplier profile is not a certification, and none of it converts a target date into a committed one. Only a dated commitment from the supplier does that, and it should refer to a specific milestone in your table.
What to send, and what to ask back
Send one package: the completed rows you own, the target date labelled as a target, the inputs you owe the supplier with their dates, and the date you need an answer by. Keep it to the table plus a short covering note — a long narrative brief buries the assumptions.
Ask back, in the same table:
- Which milestones can you date today?
- Which milestones are waiting on us, and what exactly do you need?
- Which unknowns would you flag as most likely to move the date?
- Does the named place in our agreed trade term match how you normally hand over?
- Where would you put the buffer, and why?
Their answers are the first version of the plan you both own. If they will only commit to part of it, that is useful information too — it tells you which unknowns to resolve first.
Next action
Copy the milestone table into your draft brief and label the requested date as a target. Ask the supplier which assumptions it can confirm and by when. The on-site Sourcing Desk worksheet does not send your draft or check the supplier's date; any capacity claim, quotation or delivery commitment needs confirmation from the parties involved.