To create and update a customer object, two submit actions are required:
1. Create Customer
2. Interaction
Submit actions are set on the form, and go to the Submit Actions view.
By adding the Create Customer submit action, the field that will identify the customer must be selected. In most cases the email field is the field to choose.
The field must be set on the email input field too.
After the first submit action is added, the Interaction submit action is needed. This interaction will set the field values for the customer object. Its neccessary to set the basic form field in the interaction like first and lastname.