https://repost.aws/questions/QUISLzxSmyQgu6cxUzYcc9Gg/sending-unique-id-to-presignup-externalprovider-triggersource-is-not-showing-up-in-validationdata-object-of-event-request
Sending Unique ID to Presignup_ExternalProvider triggersource is not showing up in validationData...
Hi, My app needs to restrict the user no more than one registration from mobile device. This is true for both custom registration process and via social login...