1 ) SAP大的方向来讲，分后勤，财务，和系统底层三大块。
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2 ）后勤传统上包括采购，生产，销售，维修，项目系统和人事等。
3 ）财务简单的理解就是一般企业的账务运作和成木管理。
4 ）系统底层可以理解为系统支持和程序开发。
5 ）入门后勤的某个模块最容易，但也最为有深度，目前网络上的相关学习资料己经相当齐全。
6 ）网络管理和程序开发出身的，建议做系统底层。这一块凭着你自己的闭门钻研，也能达到一个很高境界。程序员，只要写过几只复杂的程序，做过一两个复杂的接口也就可算是高级开发人员了。
7 ）如果想涉足冷门，迎合市场上目前的特殊需求，后勤的可以考虑直接学习CRM , SCM , CS ；财务的可以考虑SEM ( BPS , BCS , CPM ) ; 底层和开发相关的可以考虑BI( BW ) , XI 等。但以上的课程和学习资料相对而言较少，学习难度大，必须有思想准备。
只有ECCS或者BCS，你的是ECCS。
参考下面的链接看看哪里没有配好。
sap
做合并有几个模块：fi-lc已经停用。ec-cs是基于r/3的合并。bcs是基于bw的合并。在合并模块有自己的组织结构和主数据。需要与财务会计关联。财务会计的数据根据规则传输到合并。在合并模块进行抵销和调整。最后生成合并报表。
我在项目上做过类似的。
首先要做的是物料主数据中 找个字段记录一下物料申请人 邮箱
以MIGO为例
首先需要 BASIS做SAP 相应邮件的配置
用Badi：MB_MIGO_BADI增强 interface:POST_DOCUMENT
发邮件FM代码如下
FUNCTION Z02FI_SEND_EMAIL_ALL.
*"----------------------------------------------------------------------
*"*"Local Interface:
*" IMPORTING
*" REFERENCE(I_ADDR) TYPE ADR6-SMTP_ADDR
*" REFERENCE(I_TITLE) TYPE SO_REC_EXT
*" EXPORTING
*" REFERENCE(E_STATUS) TYPE STRING
*" REFERENCE(E_OK) TYPE FLAG
*" TABLES
*" T_BODY STRUCTURE W3HTML
*" T_CCADDR STRUCTURE ZCCADDR OPTIONAL
*"----------------------------------------------------------------------
DATA: LV_TITLE TYPE SO_OBJ_DES,
SEND_REQUEST TYPE REF TO CL_BCS,
DOCUMENT TYPE REF TO CL_DOCUMENT_BCS,
CONLENGTHS TYPE SO_OBJ_LEN,
HTML TYPE STANDARD TABLE OF W3HTML,
WA_HTML TYPE W3HTML,
SENDER_ID TYPE REF TO IF_SENDER_BCS,
RECIPIENT TYPE REF TO IF_RECIPIENT_BCS,
SENT_TO_ALL TYPE OS_BOOLEAN,
BCS_EXCEPTION TYPE REF TO CX_BCS,
BCS_MESSAGE TYPE STRING.
DATA RECIPIENTCC LIKE RECIPIENT.
DATA L_ADDR LIKE I_ADDR.
LV_TITLE = I_TITLE.
WA_HTML-LINE = 'html'.
APPEND WA_HTML TO HTML.
WA_HTML-LINE = 'body'.
APPEND WA_HTML TO HTML.
LOOP AT T_BODY.
WA_HTML-LINE = T_BODY-LINE.
APPEND WA_HTML TO HTML.
WA_HTML-LINE = 'BR'.
APPEND WA_HTML TO HTML.
ENDLOOP.
WA_HTML-LINE = 'BR'.
APPEND WA_HTML TO HTML.
WA_HTML-LINE = '/body'.
APPEND WA_HTML TO HTML.
WA_HTML-LINE = '/html'.
APPEND WA_HTML TO HTML.
TRY.
CLEAR SEND_REQUEST.
SEND_REQUEST = CL_BCS=CREATE_PERSISTENT( ).
CLEAR DOCUMENT .
DOCUMENT = CL_DOCUMENT_BCS=CREATE_DOCUMENT(
I_TYPE = 'HTM'
I_TEXT = HTML
I_LENGTH = CONLENGTHS
I_SUBJECT = LV_TITLE ).
* Add document to send request
CALL METHOD SEND_REQUEST-SET_DOCUMENT( DOCUMENT ).
* Construct sender and receiver
CLEAR: SENDER_ID , RECIPIENT .
* sender_id = cl_cam_address_bcs=create_internet_address( 'TESTDELOITTE@PETROCHINA-HFY.COM' ).
RECIPIENT = CL_CAM_ADDRESS_BCS=CREATE_INTERNET_ADDRESS( I_ADDR ).
* Set sender
CALL METHOD SEND_REQUEST-SET_SENDER
EXPORTING
I_SENDER = SENDER_ID.
* Add recipient with its respective attributes to send request
CALL METHOD SEND_REQUEST-ADD_RECIPIENT
EXPORTING
I_RECIPIENT = RECIPIENT
I_EXPRESS = 'X'.
LOOP AT T_CCADDR WHERE CCADDR IS NOT INITIAL .
CLEAR RECIPIENTCC.
RECIPIENTCC = CL_CAM_ADDRESS_BCS=CREATE_INTERNET_ADDRESS( T_CCADDR-CCADDR ).
CALL METHOD SEND_REQUEST-ADD_RECIPIENT
EXPORTING
I_RECIPIENT = RECIPIENTCC
I_COPY = 'X'
I_EXPRESS = 'X'.
ENDLOOP.
* Set E-mail sending options
CALL METHOD SEND_REQUEST-SET_STATUS_ATTRIBUTES
EXPORTING
I_REQUESTED_STATUS = 'E'
I_STATUS_MAIL = 'E'.
CALL METHOD SEND_REQUEST-SET_SEND_IMMEDIATELY( 'X' ).
* Send document
CALL METHOD SEND_REQUEST-SEND(
EXPORTING
I_WITH_ERROR_SCREEN = 'X'
RECEIVING
RESULT = SENT_TO_ALL ).
IF SENT_TO_ALL = 'X'.
* E_STATUS = 'Email is send out successful.'.
E_OK = 'X'.
ENDIF.
COMMIT WORK.
CATCH CX_BCS INTO BCS_EXCEPTION.
BCS_MESSAGE = BCS_EXCEPTION-GET_TEXT( ).
E_STATUS = BCS_MESSAGE.
EXIT.
ENDTRY.
ENDFUNCTION.
