How can we setup the system to alert users if the invoice number they type in is already in use to avoid duplicates?
AP invoices (bills) - How to alert users the invoice number is already in use?
Hi
Are you using the Manual Numbering? What are the challenges you are seeing in duplicate invoices?
There is an Option to implement the customization like customer order nbr
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/b67adffc-a382-4954-a82c-11971f47c2bd.png)
Hello,
Check ON the Raise an Error on Duplicate Vendor Reference Number setting in AP Preferences screen. Acumatica will show an error when a vednor’s invoice number is entered more than once, forcing the user to make a change before saving a new Bill or Debit Adjustment.
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/9efe10d1-d152-4757-9c41-e23ba80773a0.png)
Laura
Hello,
Check ON the Raise an Error on Duplicate Vendor Reference Number setting in AP Preferences screen. Acumatica will show an error when a vednor’s invoice number is entered more than once, forcing the user to make a change before saving a new Bill or Debit Adjustment.
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/9efe10d1-d152-4757-9c41-e23ba80773a0.png)
Laura
Thank you, Laura. That worked for us.
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