Duplicate invoice checks for Dynamics 365 Finance

A duplicate invoice check stops the same supplier bill being entered and paid twice.

What Dynamics 365 Finance does on its own

The Check the invoice number used setting on Accounts payable parameters can reject an invoice number that already exists on a posted invoice for the vendor.

What you need in Dynamics 365 Finance

• Accounts payable administrator role

Setting it up in Dynamics 365 Finance

Where to find it: Accounts payable > Setup > Accounts payable parameters

1. Open Accounts payable parameters and find Check the invoice number used.
2. Set it to Reject duplicate.
3. Turn on the feature that blocks workflow submission for duplicate numbers.
4. A duplicate gives an alert and the user fixes the number.

Good to know in Dynamics 365 Finance

• The comparison is per vendor against posted invoices, including invoices that arrive through a web service.
• The check compares invoice numbers only. The same bill keyed under a different number is not caught.
• With a warning option, an icon shows on the vendor invoice form and Error text shows the message.

How to do it in Dynamics 365 Finance

How to stop paying a vendor invoice twice in Dynamics 365 Finance

Before you enter a vendor invoice in Dynamics 365 Finance, search the vendor's bills for the same number or amount. Use one reference format and check the payment proposal for repeats.

What Pulsify adds

1. Pulsify checks every invoice against earlier ones on invoice number plus supplier, tax ID or date.
2. Bills keyed straight into Dynamics 365 Finance count too.
3. A file identical to one already uploaded is held. A person can process it anyway.
4. A suspected duplicate asks the approver to confirm with Approve anyway.

Pulsify connects to Dynamics 365 Finance. 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 Kinetic
• Duplicate invoice checks for IFS Cloud
• Duplicate invoice checks for CloudSuite Industrial
• Invoice fraud checks for Dynamics 365 Finance
• Line item coding for Dynamics 365 Finance
• Multi-entity accounts payable for Dynamics 365 Finance
• All Dynamics 365 Finance how-to guides

Sources

Last checked 2026-10-19.

• learn.microsoft.com/en-us/dynamics365/finance/accounts-payable/vendor-invoices-overview
• learn.microsoft.com/en-us/dynamicsax-2012//accounts-payable-parameters-form