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We created Sage Pay Payment Gateway tab at magento backend allowing admin to manage all of orders paid by Sage Pay payment gateway.
There are two options, including: Transactions and Subscription Profiles.
Transactions
Then, click on Sage Payment Gateway > Transactions to view more details.
To view more details, admin can directly click on each Transaction ID
Especially, all of data regarding these orders will also automatically sync to customer's SagePay account.