QuickBooks field mapping to ZOHO CRM ??? how to link "Customer Name"??

QuickBooks field mapping to ZOHO CRM ??? how to link "Customer Name"??

QuickBooks has a field entitled "Customer Name" to be mapped to ZOHO CRM.  However ZOHO CRM does not have that available field.  I am already mapping Last Name - Last Name.  

What should I map to Customer Name? 

Michael Kokernak
Across Platforms, Inc.
www.acrossplatforms.com