Visa Developer Community

I'm trying to get started with the  Visa Card Eligibility Service API. I'm trying to register the iFRAME: https://developer.visa.com/capabilities/vces/reference#vces__visa_card_eligibility_iframe__v1__register_iframe with the following CURL request:   curl -vvv -X POST -H 'Accept: application/json' -u user_id:password \ --data '{"vendorUniqueId": "<vendor_id>", "correlationId": "dfsdfasdsdf", "requestTimeStamp": "05/12/2018 12:03:0 AM", "extendedData": ""}' https://sandbox.api.visa.com/visacardeligibilityservices/v1/registeriframe/token With the above I get the following response:    {"responseStatus":{"code":"9124","severity":"ERROR","message":"Expected input credential was not present","info":"","status":400}}⏎ Why is this happening?    Thanks ... View more