SAP-BAPI開發(fā)注意事項講解

1、BAPI開發(fā)注意事項BAPI的Processing Type要是Remote-Enabled Module的。這樣外圍系統(tǒng)才可以調(diào)用此BAPI。BAPI中的參數(shù)都要是pass by value，而不能是pass by reference。You can use import、export、tables parameters can be used. All error messages have to use the RETURN parameter.可以使用import、export、tables傳遞參數(shù)。所有的錯誤消息使用RETURN返回。在BAPI開始和結(jié)束要有MAPPING字段映射，這

2、樣可以保證對外接口的穩(wěn)定性。返回參數(shù)return中的Message應(yīng)該由Message Class傳入。這樣的好處是修改返回描述信息不用修改程序，而且返回值描述可以翻譯成各種語言，返回值中可以傳入變量。CLEARreturn.return-type=type.return-id=cl.return-number=number.return-message_v1=par1.return-message_v2=par2.return-message_v3=par3.return-message_v4=par4.MESSAGEIDclTYPEINUMBERnumberWITHpar1par2par3

3、par4INTOreturn-message.The BAPI must not invoke a COMMIT WORK command.在BAPI中不要使用COMMIT WORK，因為這樣有助于在更新數(shù)據(jù)庫時減少鎖的周期。The BAPI must not contain any CALL TRANSACTION, SUBMIT REPORT, or SUBMIT REPORT AND RETURN command.在BAPI中不要包含CALL TRANSACTION, SUBMIT REPORT, or SUBMIT REPORT AND RETURN等命令。The BAPI must

4、not produce any screen output.BAPI中不要產(chǎn)生任何屏幕輸出。Call scree 100.Minimize the use of read transaction that depend on a previous database COMMIT to avoid lost wait time from a previous update.盡量減少使用那些依賴提前調(diào)用COMMIT來減少等待時間的讀事務(wù)。Dont use type CURR in the interface. All parameters use domain BAPICURR.不要在接口中使用C

5、URR。所有的參數(shù)都使用domain BAPICURRDo not use an INCLUDE structure.不要使用INCLUDE。如果使用Subroutine，直接在BAPI中進行調(diào)用。Do not use the global memory area to transfer values.不要使用全局變量去傳值。Do not use SET and GET statements.不要使用SET 和GET語句。BAPI must carry out their own authority checks.BAPI必須要有他們自己的用戶驗證。我們所有用戶驗證都是通過外圍進行，所以SAP

6、的追加開發(fā)不需要用戶驗證。BAPI cannot issue an A or E type message. Any error message that has to be report back to the caller must use the Return parameter.BAPI中不允許使用A或E類型的MESSAGE。任何的MESSAGE必須通過RETURN參數(shù)返回。Each parameter must refer to a data structures in the ABAP Dictionary.每個參數(shù)必須參考APAB字典中的STRUCTURE。You have to

7、 create separate data structures for BAPI that are independent of the data structures generally used in the SAP system application.應(yīng)該為BAPI創(chuàng)建單獨的數(shù)據(jù)結(jié)構(gòu)，而不要依靠SAP系統(tǒng)程序已經(jīng)使用的數(shù)據(jù)結(jié)構(gòu)。All data structure names must begin with BAPI.所有數(shù)據(jù)結(jié)構(gòu)必須以BAPI命名。BAPI structure names should be as meaningful as possible.BAPI結(jié)構(gòu)的命名要有

8、意義。You must not use APPEND and INCLUDE in BAPI data structures.不能在BAPI數(shù)據(jù)結(jié)構(gòu)中使用APPEND和INCLUDE。因為APPEND和INCLUDE會造成沖突，當(dāng)BAPI的數(shù)據(jù)結(jié)構(gòu)改變的時候。Always try to use existing central data elements and domains for fields.盡量使用存在的data elements 和domainsOnly use one function group for all of the business object.所有的BUSSINESS OBJECT寫的同一個Function Group中。即BAPI中的方法多必須屬于同一個Function Group。A BAPI dose not cause a program termination(A message).一個BAPI不能導(dǎo)致