<section><p>To ensure you don't receive duplicate payments, you should assign a unique Invoice ID to every payment. Then, implement the Block accidental payments setting. </p></section><section><p>Here's how:</p><ol><li>Go to&nbsp;<strong></strong><a href="https://www.sandbox.paypal.com/businessmanage/preferences/payments" target="_blank">Preferences for receiving payments</a>.</li><li>Ensure the option <strong>Yes, block multiple payments per invoice ID</strong> is selected.</li></ol></section><section><p><a href="https://www.paypal.com/us/cshelp/article/ts2228" target="_blank">How do I enter and process transactions in Virtual Terminal?</a></p></section>

How do I block duplicate payments in Virtual Terminal?

Products/Virtual Terminal

To ensure you don't receive duplicate payments, you should assign a unique
Invoice ID to every payment. Then, implement the Block accidental payments
setting...

How do I block duplicate payments in Virtual Terminal? | PayPal VA

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