Getting partner details from GUID

*      CALL FUNCTION 'CRM_PARTNER_READ_OW'
*    EXPORTING
*      iv_ref_guid          = lv_guid
*      iv_ref_kind          = 'A'
*    IMPORTING
*      et_partner_wrk       = lt_part
*    EXCEPTIONS
*      error_occurred       = 1
*      parameter_error      = 2
*      entry_does_not_exist = 3
*      OTHERS               = 4.
*  IF sy-subrc <> 0.
*    EXIT.
*  ENDIF.
*  describe table lt_part lines lv_nr.