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Allow Gift Aid: Allow customers to donate to charity. Note that this function only works if your Sage account is enabled for Gift Aid.
Vendor Reference Code: This will add to the unique reference of the customers' transactions. Doing this will help you recognize the source of the transactions in case you have multiple stores..
Note: Customer must use correct SagePay account to config. If account does not belong to SagePay, SagePay could not process your transaction. Payment is unsuccessful.
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