I am working on building a custom object -- this is the first one I have built. We will be passing data about rebates from a third-party database into Marketo via API. Some of the data fields getting passed in (e.g., first name, last name, email, etc.) already exist. Others do not yet exist.
The question I have is, for fields that do already exist, do I need to re-create the those fields in the custom object? Would I need to create a field called "Rebate Object First Name", "Rebate Object Last Name", and "Rebate Object Email" in the custom object?
I am assuming that I need to create new fields for data fields that don't yet exist in Marketo, but I am unsure about the fields that already do exist. I don't want to create duplicate fields for no reason, so if I can, I would just send the data into Marketo using existing fields when possible. But I am not sure if that will work.