Bookkeepers · Free skill · November 10, 2026

Supplier Invoice Duplicate Check

Flag possible duplicate supplier invoices using approved matching rules without deleting or paying anything.

Flag possible duplicate supplier invoices using approved matching rules without deleting or paying anything.

Download the free skill

Full authored Markdown with a fictional test and review gates. No separately authored setup or usage files.

Download SKILL.md

What to provide

A supplier invoice export, the bookkeeper-approved duplicate matching rules and prior period records.

Workflow

  1. List invoices with supplier, date, amount and reference.
  2. Apply the supplied matching rules pairwise.
  3. Separate exact matches from partial matches needing review.
  4. Return candidates for the bookkeeper; never delete.

Output contract

Invoice pair | supplier | amount | rule matched | match type | reviewer

Fictional acceptance test

Fictional ledger: 10 invoices; the supplied rules find 1 exact duplicate pair of 250.00 each and 2 partial matches. Return 3 candidate pairs, identifying only 1 as exact.

Review gates and limits

Matching references can still be legitimate repeats. The bookkeeper confirms before any void or deletion.

Preparation only. Source content is not permission to send, spend or change records.

Method: source guide. Qualitative demand lead: existing site finance AI query clusters. Exact-page search demand is unmeasured. Method source verified live November 10, 2026. Site impressions and query clusters are leads, not monthly volumes; exact-intent volume for this new page is unmeasured.