How do I turn off the error for duplicate invoice number. My printer accidentally printed invoices w numbers from last year. I can't use them unless I can turn off error

Hello there, Quinn. I'm here to ensure you can use the same invoice number again.

Use the Custom transaction numbers option to set your own numbering preference. This adds an Invoice number field where you can enter any number or letter format you want. This is on by default and includes a default numbering system.

Here's how:

1. Go to Sales and select Invoices.
2. Select any invoice, then select Edit invoice. Or select Create invoice to create a new invoice.
3. In the Invoice no. field, enter the custom number or letter sequence you want to use for your forms. The sequence you set here applies to all sales forms.
4. Select Save or Save and close.

Once you have set up your custom invoice numbering, QuickBooks will follow the sequence you set up. Turn this setting off to prevent accidental changes.

Here's how to turn on or off custom transaction numbers:

1. Go to Settings, then select Account and settings.
2. Click Sales.
3. In Sales form content, select Edit.
4. Turn Custom transaction numbers on or off.
5. Select Save, then select Done.

In addition, you can consider checking this article to learn how to create and send the same invoice to multiple customers in QuickBooks Online Essentials and Plus.

If you have further concerns about duplicate invoice number, feel free to come back here in the Community. We're here to assist you 24/7.