Below is the script to populate the employee addresses into Oracle HRMS base tables using API's.
DECLARE
   x_address_id              NUMBER;
   x_object_version_number   NUMBER;
   x_error_code              VARCHAR2 (10);
   x_error_desc              VARCHAR2 (2000);
BEGIN
   hr_person_address_api.create_person_address
      (p_validate                   => FALSE
      ,p_effective_date             => SYSDATE
      ,p_person_id                  => 13676
      ,p_primary_flag               => 'Y' -- Set Y for Primary address and N for Others.
      ,p_date_from                  => SYSDATE
      ,p_address_line1              => 'House Number : 0000'
      ,p_address_line2              => 'Sector : 00'
      ,p_town_or_city 		    => 'Delhi'
      ,p_postal_code                => '110001'
      ,p_style                      => 'IN'
               --API Parameters will vary depending upon the style you choose.
      ,p_address_id                 => x_address_id
      ,p_object_version_number      => x_object_version_number
      );
EXCEPTION
   WHEN OTHERS
   THEN
      x_error_code               := SQLCODE;
      x_error_desc               := SQLERRM;
END;
/

COMMIT ;