Do all fields need to be mapped?

This might be a stupid question. For this plugin to work do all form fields need to be mapped?

I was going to use this plugin to add e-mail, name and dob from a contact form to our dotmailer e-mail database.

I’m not getting an error back here is the debug code:

*** Service ***
Array
(
    [name] => dotmailer
    [url] => http://dmtrk.com/signup.ashx
    [forms] => Array
        (
            [0] => gf_5
        )

    [success] =>
    [failure] =>
    [timeout] => 60
    [mapping] => Array
        (
            [0] => Array
                (
                    [lbl] => Addressbook
                    [src] => [input_9]
                    [3rd] => addressbookid
                )

            [1] => Array
                (
                    [lbl] => User ID
                    [src] => [input_8]
                    [3rd] => userid
                )

            [2] => Array
                (
                    [lbl] => Email
                    [src] => [input_3]
                    [3rd] => Email
                )

            [3] => Array
                (
                    [lbl] => First name
                    [src] => [input_4]
                    [3rd] => cd_FIRSTNAME
                )

            [4] => Array
                (
                    [lbl] => Last Name
                    [src] => [input_5]
                    [3rd] => cd_LASTNAME
                )

            [5] => Array
                (
                    [lbl] => Submit
                    [src] => [gform_submit]
                    [3rd] => Submit
                )

        )

    [separator] =>
)

*** Post (Form) ***
http://www.diverseabilities.org.uk/signup/
Array
(
    [input_9] => 4361974
    [input_8] => 51265
    [input_3] => test456@gmail.com
    [input_4] => Test
    [input_5] => Subject
    [input_14_1] =>
    [input_14_2] =>
    [input_14_3] =>
    [input_14_4] =>
    [input_14_5] =>
    [input_14_6] =>
    [input_16] => Array
        (
            [0] =>
            [1] =>
            [2] =>
        )

    [input_17] =>
    [is_submit_5] => 1
    [gform_submit] => 5
    [gform_unique_id] =>
    [state_5] => WyJbXSIsIjg0NjU0ZGIzZGJlMDBjNWU1MDI1NmI3NDY4MzMyMmI1Il0=
    [gform_target_page_number_5] => 0
    [gform_source_page_number_5] => 1
    [gform_field_values] =>
)

*** Post (to Service) ***
Array
(
    [timeout] => 60
    [body] => Array
        (
        )

)

*** Response ***
Array
(
    [headers] => Array
        (
            [cache-control] => private
            [date] => Tue, 24 Mar 2015 10:20:34 GMT
            [connection] => close
            [content-length] => 0
        )

    [body] =>
    [response] => Array
        (
            [code] => 200
            [message] => OK
        )

    [cookies] => Array
        (
        )

    [filename] =>
)

https://wordpress.org/plugins/forms-3rdparty-integration/