Supplier order confirmations: how to get a date on every PO line

Why confirmations matter

A purchase order without a supplier confirmation has your requested date, not the supplier's commitment. Planning, reorder points and every shortage check downstream use that date as if it were true. When deliveries are slowing, as they have for 11 consecutive months according to ISM's October 2026 report, unconfirmed lines are where shortages hide.

What a confirmation should contain

• Quantity the supplier commits to ship, which may be lower than ordered.
• Date the goods will be ready or arrive, stated the same way for every supplier.
• Split shipments, if any, with a quantity and date for each.
• Reference to your PO number and line, so it can be entered without guesswork.

A routine that gets a date on every line

1. Set an expectation

Tell suppliers, in your purchase order terms or a short note, that each order should be confirmed within a few working days, with quantity and date per line.

2. List unconfirmed lines every day

Export open purchase order lines with no confirmed date, or with a confirmed date older than the last change you know of. Sort them by the days of cover of the item, shortest first: an unconfirmed line on a part with 3 days of cover matters more than one on a part with 90.

3. Follow up the top of the list

Ask for a confirmation on the lines at the top of the list first. Keep the request short and specific: PO, line, item, quantity and the date you need.

4. Enter what you receive the same day

A confirmation that sits in an inbox does not exist for planning. Enter the confirmed quantity and date on the PO line as soon as it arrives.

5. Measure

Track the share of lines confirmed within your expected delay, the share of confirmed dates that later moved, and on-time delivery against both the first and the latest confirmed date.

Illustrative example, not a customer result

A buyer has 180 open lines. 35 have no confirmation. Sorted by cover, 6 of those 35 are for parts with less than a week of stock. The buyer asks those 6 suppliers for a dated confirmation this morning and sends one grouped weekly request for the other 29.

Common mistakes

• Accepting "week 47" or "end of month" without a date that can be entered.
• Recording the confirmation in email but not in the ERP.
• Chasing all unconfirmed lines with the same urgency instead of starting with the parts that run short first.

How WERISCO helps

WERISCO lists late and undated supplier orders, ranked by severity, with the days of cover of the part behind them and the rest of the evidence on each line, so buyers know which confirmations to ask for first. It is not a supplier portal: nothing is sent to suppliers and nothing is written back to your ERP. See purchase order collaboration.

Questions people ask

Should I use EDI or a supplier portal for confirmations?

Either helps at scale. What matters most is that every line gets a quantity and a date, and that it reaches the ERP the same day.

What if a supplier never confirms?

Treat the line as undated and as a risk when cover is low, and raise it in your supplier review.

How quickly should suppliers confirm?

A few working days after the order is a common expectation. Agree it with each supplier and measure it.