Action required: New mandatory fields for Visa Secure from 08/12/2024 Please note that Visa demands new mandatory fields for 3-D Secure transactions starting August 12, 2024. We recommend you implement the changes early on to be prepared. If you have any problems with the changeover, please contact our Merchant Services in good time. New Mandatory fields: either email (JSON: billToCustomer.email) or phone (JSON: billToCustomer.phone) or mobile phone (JSON: billToCustomer.mobilePhone) must be provided. See: billToCustomer (JSON: billToCustomer) | 