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This article applies to QuickBooks Online only. If an invoice or check payment is sent from Garde to QuickBooks and the invoice number or check number already exists, there’s a built-in QuickBooks setting that will block the duplicate from being created.
These settings do not prevent duplicates in QuickBooks Desktop. As far as we know, there isn’t a way to prevent duplicates when data is imported into QuickBooks Desktop.
Once you enable these settings, QuickBooks will send back a message to Garde any time it detects a duplicate invoice or check. The export will stop, and the item will show an error on the Garde Export page. You can then simply mark the invoice or check as “skipped” in Garde — no further action needed.

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How to enable duplicate warnings

  1. Open the appropriate client file in QuickBooks Online.
  2. Click the gear icon in the upper right to open Settings.
  3. Select Advanced.
  4. Scroll down to the Other preferences section.
In that section, turn on both of these settings:
  1. Warn if duplicate check number is used — select ON.
  2. Warn if duplicate bill number is used — select ON.