In QuickBooks Online, there is no feature set up to print reference numbers (or vendor bill numbers) on voucher checks. The reference number comes directly from entered bill number field.

Here is a sample of the Voucher Check printout:
Click on the screenshot below to enlarge it

• Reference column = entered vendor invoice number on “bill no.” field
• Original amount = vendor invoice amount
• Printer setup selection = voucher (not standard)

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