QuickBooks Desktop provides a seamless way to record transactions by entering the processed transaction directly in the company records. While trying to enter the payment, QuickBooks sometimes encounters error 3120. The error mainly occurs when the transaction you are trying to enter already exists in QuickBooks records. Common troubleshooting involves resyncing the transactions in QuickBooks, but this does not always resolve the error. If you are also struggling with QuickBooks Error 3120, then follow the detailed instructions mentioned in this article for a quick solution.
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