Find duplicate and suspicious incoming invoices

Accounting finds duplicate or suspicious invoices to prevent errors and fraud

Needs setupAI Act: no extra obligationsFinding anomalies & fraudAll industries

Fits: Finance & accounting · Purchasing

Invoices posted twice, wrong bank details and unusual patterns are spotted before the money is transferred. Accounting checks in a targeted way instead of at random.

Is this for you?

  • You post many incoming invoices from many suppliers, by post, email and portal.
  • There have already been duplicate payments, fake invoices or emails claiming new bank details.
  • Invoice data is in accounting or ERP software and can be exported as a table.
First step today

Export one quarter’s incoming invoices from accounting with supplier number, invoice number, date, amount and bank details, replace supplier names with numbers and shorten the bank details to a code. Have possible duplicates and anomalies flagged using the template below, and check the hits yourself.

How to go about it

  1. Decide what counts as a suspicious invoice
  2. Bring invoices, purchase orders and supplier master data together
  3. Set up check rules and analysis in accounting
  4. Have accounting check every hit
  5. Stop, correct or report the payment
  6. Fine-tune the rules after every incident

Templates to copy

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Included in the training

The complete guide

  • 6 steps explaining exactly what to do
  • 3 proven templates to copy into your own AI
  • Safe use: data, checking, deciding, informing
  • Pitfalls, effort and how to recognise success

With the training you get all 430 guides for as long as your access runs.

See the trainingOne-off per person, no subscription

Same approach, other use cases

12 more use cases follow the pattern “Finding anomalies & fraud”.

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A-071 · Legal status 08.10.2026