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Integration requirements:

• 1

  Signature is required in the POST to the payment engine. For a detailed explanation of how to generate a signature, see our documentation on the checkout page.

• 2

  The product should have a sandbox/test mode in the admin/backend in order for the integration to be tested by the merchant. For sandbox credentials, please see our developer documentation, or contact us for our default credentials for recurring billing.

• 3The ITN callback must do the following security checks:

  • -

    Verify that the security signature is valid.

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    Verify that the source IP belongs to PayFast.

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    Verify that the payment amount matches the order amount (unless partial payment is allowed by your product).

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    Verify that the data received is valid.

• 4

  The merchant needs the option to add a passphrase on the page of your module where the configuration is set up.