I need some Architecture / Data Modeling help in regards to Journey builder and the CRM
I am brining new Customers into the SFMC via a Salesforce Data Event in Journey Builder, for a welcome journey. I am leveraging the Lead object.
There is a custom Customer_ID field in the Lead Object which I want to use as my unique identifier for a customer.
Via the sync, i can set that up to be the Contact_Key in my contact Model. But in Journey Builder, I am pretty sure the system sets the Lead_ID to be Subscriber_ID. I dont see how to set the Contact Key to be "ID" from lead.
I fear i am not getting my complete view of sends for new Leads.
But how do I tie the sends in the Journey to the contact model?