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MerchantValidationEvent interface of the Payment Request API enables a merchant to verify themselves as allowed to use a particular payment handler.
Learn more about merchant validation.
A string providing a unique payment method identifier for the payment handler that's requiring validation. This may be either one of the standard payment method identifier strings or a URL that both identifies and handles requests for the payment handler, such as
A string specifying a URL from which the site or app can fetch payment handler specific validation information. Once this data is retrieved, the data (or a promise resolving to the validation data) should be passed into
complete()to validate that the payment request is coming from an authorized merchant.
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