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Paper.id Open API offers two ways to request payments :

Invoice-based Payment Request: Create an invoice and send it to your partner. They will receive the invoice details along with a payment link, allowing them to choose any available payment method.
Direct Payment Request: Create a Payment Request that includes the invoice information. With this method, you define the specific payment method for your partner, and they CAN NOT change it. This option also allows you to design your own user interface and payment flow. The first method, however, requires your partner to open a Paper.id payment link.

Paper.id sends a payment notification to your partners for every payment made, irrespective of the payment method. These notifications are crucial for ensuring both parties are aware that Paper.id is securely handling the funds, and as such, there is currently no option to disable them.