Output tab screen reference
Field Name: a hierarchical list of data source fields configured for the campaign that you can map to personalization fields in the OLT.
Type: the data type of field.
Field Name: personalization field added to the OLT. Name assigned by default. You cannot change this name.
Display Name: Name used to display the field in the list of available personalization fields in the eMessage Document Composer. You can change this name.