how to fix Stampli PO matching error duplicate invoice matched to same purchase order line fails error

TL;DR

Fix this in Stampli by acting on the exact problem first: check whether the second document is a resubmission with a corrected amount rather than a true duplicate in Stampli, if so unmatch and withdraw the first version, match the corrected version to the order line, and note the superseded document number on the record. Do not resubmit the same invoice or rerun the same match unchanged, because the same inputs produce the same failure. Prove the fix on one purchase order line with two invoices first, then rerun the full scope and reconcile the results.

how to fix Stampli PO matching error duplicate invoice matched to same purchase order line fails error

Use this when

• The operation in Stampli fails with this exact problem: how to fix Stampli PO matching error duplicate invoice matched to same purchase order line fails error.
• The same failure repeats on retry with unchanged inputs.
• An invoice match, hold release, approval or payment run is blocked until this is resolved.

Not for this skill when

• The notice is a platform outage from the vendor. Resolve that first, then return here if this problem remains.
• The operation completes and you only disagree with a price, tolerance or eligibility judgement. That is a finance owner decision, not this failure.

Steps

1. Reproduce the failure on one named invoice, purchase order line or receipt in Stampli and record the full problem text plus the invoice, order and receipt numbers involved. Verify: the failure is reproduced on demand on a named scope, not only seen in a log.
2. Apply the specific fix for this problem: check whether the second document is a resubmission with a corrected amount rather than a true duplicate in Stampli, if so unmatch and withdraw the first version, match the corrected version to the order line, and note the superseded document number on the record. Verify: the single failing invoice, line or receipt now behaves as the fix predicts, or the corrected value is visible on the record.
3. Check neighbouring invoices, order lines or receipts that share the same supplier, tolerance rule or template, because this class of failure rarely affects only one record. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Rerun the original operation in Stampli on the previously failing scope, watching for the same problem rather than assuming success from a quiet log. Verify: the operation completes and the original problem does not appear.
5. Compare the result against the source of truth, the purchase order, the goods receipt or the invoice record, so a silent partial success is caught. Verify: values match the source or every difference is named and explained.
6. Record the fix, the triggering input and the verification result on the match log so the next occurrence is recognised immediately. Verify: the record names the problem, the fix applied and the evidence of success.

Variant phrasings

how to fix Stampli PO matching error duplicate invoice matched to same purchase order line fails error

The verbatim form searchers paste from the console, report or run log. Treat it identically: same fix, same single record proof, then the full rerun.

Stampli PO matching error duplicate invoice matched to same purchase order line

The alternate phrasing for the same failure in Stampli. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

Stampli troubleshooting for this failure

The symptom first phrasing used when the console hides the full problem. Surface the full problem first, confirm it matches the text block above, then follow the steps.

Why it happens

Stampli matches on the order line without the duplicate being obvious at header level, and suppliers often send the same invoice by email and portal, so two copies compete for one line and the line quantity is consumed twice.

Edge cases

• The order, receipt or tolerance rule changed after the failing run started. Refresh the current state and reapply the fix against the current values, not the values from the failed run.
• The single record proof passes but the full rerun still fails on other invoices. Treat each remaining failure as its own scope, because a shared supplier, rule or template can hide more than one cause.
• The source systems disagree on the correct value. The purchase order governs price and quantity ordered, the receipt governs quantity received, and the invoice governs amount billed; record which source won and why.

Compatibility: Stampli at current versions, plus the purchasing, receiving or finance system the query names; no extra tooling beyond access to the source records needed to verify results.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_1KMjSSZ9qpUVASh64NcsPQ