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- Duplicate invoices and invoice fraud
Never pay twice. Never to the wrong account.
Glimps recognises an invoice it already has and does not post it on its own. If the invoice shows a different bank account than the one you know for that supplier, it waits until someone checks. Even with automatic posting on.
Waiting for you
Example- Different bank account
Bakker Verpakkingen B.V.
VF-2026-0412 · € 3.872,00
- Possible duplicate
Van der Linden Schoonmaak
2026-118 · € 1.149,50
- Posted
Groothandel De Vries
F26-3381 · € 605,00
Two ways to lose money
Both start with an invoice that looks perfectly normal. That is why they are so hard to spot among all your other invoices.
Paying twice
A supplier mails the invoice, sends a reminder with the same PDF a week later, and a colleague uploads it too, just to be safe. Three times the same invoice, and nobody notices.
You only notice when the supplier kindly asks what to do with the extra money.
Paying a fraudster
A mail from a supplier you know: "We changed banks, please pay to this new account from now on." The logo is right, the invoice looks real. The bank account belongs to someone else.
That money usually does not come back, and the real supplier is still waiting to be paid.
How Glimps spots an invoice it already has
Different file name, forwarded, mailed again: does not matter. These are the rules.
Same number, same supplier
An invoice with an invoice number Glimps already has for that supplier is a repeat.
Exactly the same file
If the file is byte for byte identical to an invoice already there, Glimps recognises it. Even with a different file name.
Receipt without an invoice number
No number to go by? Then a receipt counts as a repeat when the same supplier charges exactly the same amount on the same day.
Points at a known invoice
A document that names an invoice already in Glimps, and asks exactly the same amount for it, is flagged too.
Caught at the door
When Glimps picks invoices up from your mailbox, it checks before importing whether the invoice is already there. If so, Glimps simply says: this invoice is already in Glimps.
Looks like a duplicate? Then Glimps posts nothing.
A suspected duplicate is never posted automatically. Glimps names the invoice it matched, and you decide. Did Glimps read the invoice number wrong? Correct it and Glimps looks again. Delete the original and the suspicion against the copy is dropped by itself.
View original
Glimps names the invoice it matched. One click and you see them side by side.
Delete the copy
Really a duplicate? Gone. No second posting reaches Exact Online.
Not a duplicate
Really two invoices? Choose this, give a reason, and post it.
A different IBAN than usual? Then the invoice waits for you.
Glimps puts the name, VAT number, Chamber of Commerce number, and IBAN from the invoice next to what Exact Online knows about that supplier. If the bank account differs, Glimps holds the invoice until a person confirms the account.
- You choose: confirm the account for good, for this invoice only, or refuse it.
- Glimps does not mistake your own IBAN on a direct-debit invoice for a new supplier account.
- Glimps does not change bank accounts in Exact Online and pays nothing. Payments stay in your own bank or Exact Online.
- The check is switched on or off in your booking defaults. Your call.
Bank account changed
Bakker Verpakkingen B.V.
VF-2026-0412 · € 3.872,00
On the invoice
In Exact Online
Name
Bakker Verpakkingen B.V.
Bakker Verpakkingen B.V.
VAT number
NL862349105B01
NL862349105B01
Chamber of Commerce
61839204
61839204
IBAN
NL64 INGB 0007 8519 23
NL27 RABO 0318 2645 90
Three steps, one phone call
A mail saying the supplier changed banks proves nothing. Here is how you handle it.
Do not trust the invoice
The invoice and the mail both come from whoever sent them. A nice logo is not proof.Call the supplier
Use a number you already had, not the one from the mail. That number may just as well belong to the fraudster.Record the answer
Confirm the account for good, for this invoice only, or refuse it.
Really changed banks? Then change the account yourself in Exact Online. Glimps does not do that for you, on purpose.
Even the autopilot stops here
Released a supplier for automatic posting? A suspected duplicate or a changed bank account still stops it. That invoice always waits for a person.
Always a person
- A suspected duplicate invoice
- A different bank account than known
Also stops at
- Amounts that do not add up
- An amount above your ceiling
- A credit note
- A supplier that went quiet for a long time
- A different currency
- The duplicate check could not run
A supplier earns automatic posting step by step. Read how that works
Even earlier: the Inbox Agent sets suspicious mail aside, such as an unknown sender or a different bank account than usual. About the Inbox Agent
Questions about duplicates and fraud
Glimps recognises an invoice it already has by the invoice number together with the supplier, or by a file that is exactly the same. A receipt without a number counts as a repeat with the same supplier, the same amount, and the same day. A suspected duplicate is never posted automatically.
No. You pay yourself, from your own bank or Exact Online. Glimps makes sure a duplicate, or an invoice with a changed bank account, is not posted unseen. So it does not slip into Exact Online as an open item either.
That happens, think of two receipts from the same shop on the same day, for the same amount. View the original, choose "Not a duplicate", give a reason, and post it. A person can always post it.
Correct the number and Glimps checks again whether it is still a repeat. Delete the original and the suspicion against the copy is dropped by itself. You do not have to clear anything by hand.
Glimps holds the invoice until someone confirms the bank account. You see the name, VAT number, Chamber of Commerce number, and IBAN from the invoice next to what Exact Online knows about that supplier. Then you confirm the account for good, for this invoice only, or you refuse it.
No. Glimps does not change bank accounts in Exact Online. If you really want to change a supplier’s account, you do that yourself, after you called them.
No. A direct-debit invoice often shows your own bank account, because the supplier collects from it. Glimps recognises that and does not hold the invoice for it.
Yes, you switch it on or off in your booking defaults. We would leave it on: it is the check that stops invoice fraud.
Yes. A suspected duplicate and a changed bank account always stop automatic posting, even for a supplier you released for it. The invoice then waits for a person.
Do not trust the mail or the invoice, they both come from whoever sent them. Call the supplier on a number you already had, not one from the mail. Record the answer in Glimps.
Duplicate invoices
- Invoice number and supplier together.
- A file that is byte for byte identical.
- Receipt without an invoice number: the same supplier, exactly the same amount, the same day.
- A document that names an invoice in Glimps and asks exactly the same amount.
- When picking up from the mailbox, before importing: file name, invoice number, file hash, or invoice number with supplier.
Changed bank account
- The IBAN on the invoice is compared with the IBAN known for that supplier.
- Name, VAT number, Chamber of Commerce number, and IBAN are shown next to the supplier details in Exact Online.
- Your own IBAN on a direct-debit invoice does not count as the supplier’s account.
Read on
Automatic posting
How you decide per supplier whether Glimps posts by itself, and when it still stops.
Inbox Agent
Picking invoices up from your mailbox, and setting suspicious mail aside.
Guide: prevent double payments and IBAN fraud
What Exact Online and your bank already do, and what Glimps adds.
Security
Where your invoices live, and who can reach them.