BAPI for HCM Employee age calculation

CALL FUNCTION 'HR_AUPBS_AGE'
  EXPORTING
    pernr                  = p_pernr
    bsdte                  = sy-datum
*   REACTION               = ' '
 IMPORTING
   value                  = value
* EXCEPTIONS
*   RECORD_NOT_FOUND       = 1
*   OTHERS                 = 2
          .
IF sy-subrc <> 0.
  MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
          WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
ENDIF.