post
https://sandbox.nmi.com/api/v5/devices//payment-requests/validate
Initiate an asynchronous validation payment request on a specific cloud device. The device_id is specified in the URL path. Payment details (card number, expiration, CVV) are collected by the device itself, so they should not be included in the request body. This endpoint always operates in asynchronous mode. For synchronous payment processing with a device, use POST /api/v5/payments/validate with device_id in the request body. This endpoint uses the same underlying functionality as POST /api/v5/payments/validate.