How to resolve error: Form transaction registration failed

After making a test transaction, you may have received the error Form transaction registration failed.”

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The error would appear when the transaction request to process the payment form has a problem with the post’s format or the encryption of it when the request is sent to Opayo’s (formerly SagePay) system.

To resolve this, double-check the Encryption Password that you have placed on your plugin settings:

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You can get the “Encryption Password” or the Encryption key from your Opayo’s (formerly SagePay) account dashboard > Administrator > Password Details > Form Integration Encryption Password.

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To learn more steps on how to resolve it, you can check out Opayo’s (formerly SagePay) knowledge base article here

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