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The MPPG hosted payment will call the **Payment Request API** using the Payment Request ID, which is part of the payment URL to retrieve payment details. It will then collect payment either through manual entry or a digital wallet.\n\nThe MPPG hosted payment page will call an MPPG Web Service to process manual entry or digital wallet token transactions. Once the transaction is processed (either success or failure), the MPPG hosted payment page will invoke the Payment Request API to finish the process which in turn notifies the WebSocket.\n\n## Transaction Sequence\n\nBelow is the overall transaction sequence diagram.\n\n<img 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