[AlphaCommerceHub] Does the `PayerDetails`.`CustomerName` field of a response to the PayPal's `PaymentStatus` API request always contain only the last name of the customer?

It contains the customer’s last name in my case: a PayPal’s PaymentStatus API request, and a response to it.
Whether it is always so?
The «PayPal October 2017» specification does not answer the question.

Paypal provide customer name in separate fields. LastName is mapped to CustomerName in Alpha response. The firstname should be mapped in CustomerFirstName, did you receive that?

Yes: a PayPal’s PaymentStatus API request, and a response to it.
So I treat the CustomerName field as a customer’s last name, and CustomerFirstName as the customer’s first name:
the backend «Payment Information» block for a PayPal payment.