Data import Person - required fields blank

I am attempting to do a data import.  The company already exists in the database, the import is intended to bring in the contacts.  For all the records being imported,  the system is rejecting them with the following message.

Error Invalid Person Details 2 Required Field(s) blank

I reviwed the person table and the only required fields are first name and last name.  In the past, an import has been rejected because the status field was not included with the value active.  However, I have that in the import.

Therefore, I am wondering what the system does not like about the import.  Each line does contain a business address for the contact along with a business and mobile phone number.

Any ideas on why I am getting this error? Any assistance would be greatly appreciated. Thank you!