<section><p>PayPal returned API error code 10551 - Transaction refused due to internal security systems.<br/><br/>An attempted Direct Payment transaction was rejected. To resolve this, ask the customer to provide a different payment method.<br/><br/><strong>Note</strong>: We don’t give specific reasons for payment declines. If more information is required, have the buyer <a href="https://www.paypal.com/smarthelp/contact-us" target="_blank">contact us</a>.<br/></p></section><section><p><a href="https://www.paypal.com/us/cshelp/article/ts1061" target="_blank">Why was my customer’s credit card declined?</a><br/></p></section><section><p><span style="font-size: 15px; line-height: 107%; font-family: Calibri, sans-serif; color: rgb(44, 46, 47);">See the </span><a style="color: blue; text-decoration: underline;" href="https://developer.paypal.com" target="_blank"><span>Developer Portal</span></a> for a
    complete list of <a style="color: blue; text-decoration: underline;" href="https://developer.paypal.com/docs/nvp-soap-api/errors/" target="_blank"><span style="color: rgb(0, 112, 224);">NVP/SOAP API error codes</span></a>.</p></section>

Why did I get API error code 10551?

PayPal returned API error code 10551 - Transaction refused due to internal
security systems.

An attempted Direct Payment transaction was rejected. To resolv...

Why did I get API error code 10551? | PayPal US

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