Enable `Click to Pay` {#ctp_enable_digital_pay_intro}
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To enable `Click to Pay` on `Unified Checkout`, you must first register `Click to Pay`. This process sends the appropriate information to the digital payment systems and registers your page with each system.  
Follow these steps to enable `Click to Pay` for `Unified Checkout` using the API or in the `Business Center`. You must follow these steps for each transacting merchant for which you want to enable `Click to Pay`.