FirstName can contain alphabets, alphanumeric characters up to 128 characters but never be blank or can never contain only digits.
LastName can also contain the same characters up to 128 characters but is optional.
Api error from server used to contain very long error code, so for all API error the error code passed from sdk will be 10 i.e TCTrueSDKErrorCodeInternal, along with the specific error message from backend
Name validation based on QA comment:-
Api error from server used to contain very long error code, so for all API error the error code passed from sdk will be 10 i.e TCTrueSDKErrorCodeInternal, along with the specific error message from backend