Solved: Magento PayPal Duplicate Invoice Error

Ever faced cart abandonment by customers who use Paypal payment gateway due to "Magento PayPal Duplicate Invoice" Error?

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It is displayed when submitting payment with invoices having the same ID sent to the Paypal, multiple times. PayPal does not allow processing for the same invoice twice according to the default settings.

To overcome the issue, follow the steps at https://meetanshi.com/blog/magento-p...invoice-error/