A duplicate invoice check stops the same supplier bill being entered and paid twice.
What SYSPRO does on its own
SYSPRO warns while you key an invoice when that invoice number already exists for the same supplier. The message is Invoice already on invoice file. It catches the same number on the same supplier only.
- Same number and supplier only.
Setting it up in SYSPRO
Where to find it: Program List > Accounts Payable > Invoice Processing (AP Invoice Posting)
- Open AP Invoice Posting and pick the transaction type.
- Type the supplier's Invoice number exactly as printed.
- SYSPRO shows Invoice already on invoice file when that number exists for that supplier.
- Read the message and look up the earlier invoice.
- Correct the number or confirm it is a different invoice.
- Use the supplier on hold setting if a suspect bill must not be paid.
Good to know in SYSPRO
- It catches the same number on the same supplier only.
- A changed number, amount or date is not caught.
- It warns while keying and does not check again at payment.
How to do it in SYSPRO
How to stop paying a supplier invoice twice in SYSPRO
Before you enter a supplier invoice in SYSPRO, search the supplier's bills for the same number or amount. Use one reference format and check the payment cycle for repeats.
What Pulsify adds
- Pulsify checks every invoice against earlier ones on invoice number plus supplier, tax ID or date.
- Bills keyed straight into SYSPRO count too.
- A file identical to one already uploaded is held. A person can process it anyway.
- A suspected duplicate asks the approver to confirm with Approve anyway.
Pulsify connects to SYSPRO. We set up the connection for you. More about duplicate invoice checks in Pulsify.
What Pulsify does not do
- Pulsify never matches duplicates on amount alone.
- A duplicate flag is a warning. The approver decides.
More help
- Duplicate invoice checks for Business Central
- Duplicate invoice checks for MYOB Acumatica
- Duplicate invoice checks for Sage 200
- Invoice fraud checks for SYSPRO
- Line item coding for SYSPRO
- Multi-entity accounts payable for SYSPRO
- All SYSPRO how-to guides
Sources
Last checked 2026-10-19.
Common questions
Does SYSPRO warn about duplicate supplier invoices?
Yes. It shows Invoice already on invoice file when the same invoice number exists for the same supplier. It warns while you key the invoice.
Does the check look at amount or date?
No. A changed number, amount or date is not caught. SYSPRO checks at invoice entry, not at payment.
Does the same number from a different supplier trigger it?
No. The check is on the invoice number for that supplier only.
Why do duplicates happen?
The same invoice arrives by email and post, a supplier resends it as a reminder, or two people enter it. A statement can also be keyed as a bill.
Pulsify setup guides
Want this done for you?
Book a call to see how Pulsify handles duplicate invoice checks in SYSPRO.