Update Error: Customer Mismatch

Keep getting this error when you’re trying to push orders from WooCommerce over to QuickBooks Online?


An invoice or sales receipt already exists in QuickBooks Online with the same number as your Order# in WooCommerce – but it’s under a different customer in QuickBooks Online that it is in WooCommerce – suggesting that the sales receipt / invoice in QuickBooks Online is a conflict/ different sales receipt / invoice than the order in WooCommerce.


You need to ensure that the existing invoice / sales receipt numbers in QuickBooks Online don’t conflict with existing orders in WooCommerce. This can be done in a few different ways:

  • Using the Sequential Orders Pro plugin for WooCommerce to add a prefix to the orders in WooCommerce, so they sync to QuickBooks.
  • Changing your integration settings to sync as either an invoice or a sales receipt – the opposite of the conflicting record in QuickBooks.
  • Renumbering your QuickBooks Online invoices/sales receipts so they are no longer in conflict.
Updated on April 10, 2018

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