经比较ERP系统和CRM系统status component发现，ERP系统中包含component ‘SAP_APPL’（Logistics and Accounting），而CRM系统中没有此component. 因此，调用function module: 

data: lt_components             TYPE TABLE OF cvers_sdu.

CALL FUNCTION 'DELIVERY_GET_INSTALLED_COMPS'
*   EXPORTING
*     IV_LANGUAGE            = SY-LANGU
*     IV_BUFFERED            = 'X'
    TABLES
      tt_comptab             = lt_components
    EXCEPTIONS
      no_release_found       = 1
      OTHERS                 = 2.

  IF SY-SUBRC = 0.
    READ TABLE lt_components WITH KEY component = 'SAP_APPL' TRANSPORTING NO FIELDS.
    IF SY-SUBRC = 0.
      WRITE: 'THIS IS A ERP SYSTEM'.
    ELSE.
      WRITE: 'THIS IS NOT A ERP SYSTEM'.
    ENDIF.
  ENDIF.

 另外也用从table CVERS_TXT的内容中获取相关信息 e.g. “SAP ECC 6.0”.