This is the first step to create an Individual consumer. Phone object is mandatory to be able to go on to the next steps. You can add optional fields, this will help us to manage compliance triggers.
Only a few pieces of information are asked here, most of it will be extracted from documents during the KYC process. By doing the Endpoint: Get Consumer information, you will get access to all data.
You cannot create two consumers with the same phone number. Phone numbers must be unique.