Difference Between Function Module And BAPI

Hi Friends,
What is the technical difference between BAPI and Function Module (Normal, RFC and update)?
When do we use BAPI and FM?
If BAPI is also RFC enabled then why do we have RFC function module?
Kindly clarify with examples.
Regards,
Pradeep Singh Dhadwal

Hi Pradeep,
BAPI vs FM
Difference between FM and BAPI
BAPI stands for Business API(Application Program Interface).
A BAPI is remotely enabled function module
ie it can be invoked from remote programs like standalone JAVA programs, web interface etc..
You can make your function module remotely enabled in attributes of Function module but
A BAPI are standard SAP function modules provided by SAP for remote access.
Also they are part of Businees Objest Repository(BOR).
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects.
You create business objects and those are then registered in your BOR (Business Object Repository)
which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA.
FM
Normal FM used internally inside SAP.
Hope this helps,
Manish

Similar Messages

Difference between function module and a method?

Hi Experts
Can anybody pls tell me the technical and functional difference between function moduel and a method?
Thanks
Sudhansu

Hi,
Function modules are procedures that are defined in function groups (special ABAP programs with type F) and can be called from any ABAP program. Function groups act as containers for function modules that logically belong together. You create function groups and function modules in the ABAP Workbench using the Function Builder.
Function modules allow you to encapsulate and reuse global functions in the R/3 System. They are stored in a central library. The R/3 System contains a wide range of predefined function modules that you can call from any ABAP program. Function modules also play an important role in database updates and in remote communications between R/3 Systems or between an R/3 System and a non-SAP system.
You can declare methods in the declaration part of a class or in an interface. To declare instance methods, use the following statement:
METHODS <meth> IMPORTING.. [VALUE(]<ii>[)] TYPE type [OPTIONAL]..
               EXPORTING.. [VALUE(]<ei>[)] TYPE type [OPTIONAL]..
               CHANGING.. [VALUE(]<ci>[)] TYPE type [OPTIONAL]..
               RETURNING VALUE(<r>)
               EXCEPTIONS.. <ei>..
When you declare a method, you also define its parameter interface using the additions IMPORTING, EXPORTING, CHANGING, and RETURNING. The additions define the input, output, and input/output parameters, and the return code. They also define the attributes of the interface parameters, namely whether a parameter is to be passed by reference or value (VALUE), its type (TYPE), and whether it is optional (OPTIONAL, DEFAULT).
Unlike in function modules, the default way of passing a parameter in a method is by reference.
As in function modules, you can use exception parameters (EXCEPTIONS) to allow the user to react to error situations when the method is executed.
As in function modules, you can use the RAISE <exception> and MESSAGE RAISING statements to handle error situations.
Regards,
Sruthi

Difference between function module and userexit and badi

Hello Gurus,
                As a functional consultant i want to know what is function module and user exit and badi.
what is the difference between function module , user exit and badi?
regds
Ramachandra

Rama,
Function modules are ABAP routines that are administered in a central function library. They apply across applications and are available throughout the system. You must assign function modules to a function pool that is called a function group. A function group is nothing but a container for the function modules.
Business Add-Ins are a new SAP enhancement technique based on ABAP Objects. They can be inserted into the SAP System to accommodate user requirements too specific to be included in the standard delivery. Since specific industries often require special functions, SAP allows you to predefine these points in your software.
User exit - A user exit is a three character code that instructs the system to access a program during system processing.
SXX: S is for standard exits that are delivered by SAP.   XX represents the 2-digit exit number.
UXX: U is for user exits that are defined by the user. XX represents the 2-digit exit number .
Difference between BADI and USER-EXIT.
    i) BADI's can be used any number of times, where as USER-EXITS can be used only one time.
       Ex:- if your assigning a USER-EXIT to a project in (CMOD), then you can not assign the same to other project.
    ii) BADI's are oops based.
Hope this helps you.
Rgds
Manish

Difference between Function module and a subroutine

hi
In the case of subroutine i can access the global workarea values.
I want to know whether in the case of function module
whether
i can follow the same procedure to access the workarea values
or
i have to pass this workarea values as an import or tables parameter to the function module and then use it
(in first case whether that workarea to make global whether i have to place it in function pool please check this but which is better one)
Thx in advance for any replies.

Yes
You would have to pass the values as import parameters to access the global variables of the program otherwise you will not be able to get the values of the global variable from inside the program.
Another solution would be to export to SAP memory but the entire concept of modularization of using the FM would be lost.

Difference between Function Module and Routine

Hi,
I am zero at ABAP Skill.
Can any one explain me what is the difference between Routine in BW and Function Module .
Thanks

Hi,
well basically it is almost the same. Both have a defined interface. You can pass variables to them and they can return variables. They can also change parameters... The main difference is, that a routine (form routine) can be used within the program where it is defined only and a function module can be used in all programs, form routines.
regards
Siggi

Difference between function module and subroutines

hey all...
can u pls explai me the exact difference between subroutines and function modules...
also, when is a sub routine used and also when is a function module used..???
regards..
vishal

Hi Vishal,
Basically they do the same thing and purpose is almost same but tecnically the are way apart:
Function modules must belong to a pool called a function group.
They possess a fixed interface for data exchange. This makes it easier for you to pass input and output parameters to and from the function module.
For example, you can assign default values to the input parameters. The interface also supports exception handling. This allows you to catch errors and pass them back to the calling program for handling.
They use their own memory area. The calling program and the function module cannot exchange data using a shared memory area - they must use the function module interface. This avoids unpleasant side effects such as accidentally overwriting data.
You call a function module by its name (which must be unique) in a CALL FUNCTION statement.
and also
Unlike subroutines, you do not define function modules in the source code of your program. Instead, you use the Structure link Function Builder.
Check this link too
Re: Regarding difference between Subroutines and Function modules
Hope this helps you,
Regards
Amit
Message was edited by: Amit Kumar

Diff between Function Module and subroutine

sir,
explain the difference between Function Module and Subroutine.

Hi Sandeep,
Subroutines:
Subroutines are procedures that you can define in any ABAP program and also call from any program. Subroutines are normally called internally, that is, they contain sections of code or algorithms that are used frequently locally. If you want a function to be reusable throughout the system, use a function module.
Function Modules:
Function modules are procedures that are defined in function groups (special ABAP programs with type F) and can be called from any ABAP program. Function groups act as containers for function modules that logically belong together. You create function groups and function modules in the ABAP Workbench using the Function Builder.
Function modules allow you to encapsulate and reuse global functions in the R/3 System. They are stored in a central library.
Unlike subroutines, you do not define function modules in the source code of your program. Instead, you use the Function Builder.
Regards,
Sunil

What is the difference between the normal function module and bapi function

hi,
what is the difference between the normal function module and bapi function module.

Hi
BAPI stands for Business API(Application Program Interface).
A BAPI is remotely enabled function module ie it can be invoked from remote programs like standalone JAVA programs, web interface etc..
You can make your function module remotely enabled in attributes of Function module but
A BAPI are standard SAP function modules provided by SAP for remote access. Also they are part of Businees Objest Repository(BOR).
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. in this case u only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
Regards
Anji

RFC enabled function module and BAPI?

What is the difference between RFC enabled function module and BAPI?
I have requirement to develop a new BAPI which will update a custom table and read the same table in SAP from an external application.
Do we need define a port or RFC destination for the external application to use the new BAPI?
I am clear how the external application access the BAPI.
Thank you

BAPI are business objects which are basically object oriented. Created and linked with business objects in <b>SWO1</b>. Those business objects will be listed under BAPI tcode.
Where are RFC enabled Function call are not like that. They are just Function modules which can be accessed remotely from an SAP application.
For your example updating table, you may need to create BAPIs in SWO1 and access using those using object oriented methods from external application.
Cheers,
Thomas.

Required help on Function Modules and Bapis

Web portal publishing of ERS invoice letters. This involves modification in the BAPI screens to show the invoice PDF instead of printing??
can anyone help me in fixing this issue.

hi Anjaneyulu,
open the t-code --> and go to menu system->status-->select the program and open the program-->
selct the tree structure----in the left side the includes screen and function module everthing will show..
or
open the t-code --> and go to menu system->status-->select the program and open the program-->
go to attributes and select the Package..
next----
go to se80--> enter the package --> and dispalay it shows the list of Program , include transaction function modules and bapi's under the pakage
Regards,
Prabhudas

Function modules and BAPIs for a transactio code

Hi friends,
How i can find the List of function modules and BAPIs being used for a particular transaction code?
for example: I would like to find List function modules and BAPIs being used for the Transaction code
"FBRA"(Reset cleared items)?
Any sort of help on this will be helpful.
Thanks,
Punjaala

hi Anjaneyulu,
open the t-code --> and go to menu system->status-->select the program and open the program-->
selct the tree structure----in the left side the includes screen and function module everthing will show..
or
open the t-code --> and go to menu system->status-->select the program and open the program-->
go to attributes and select the Package..
next----
go to se80--> enter the package --> and dispalay it shows the list of Program , include transaction function modules and bapi's under the pakage
Regards,
Prabhudas

Difference between functional task and interface task

Hi All,
Kindly let me know the Difference between functional task and interface task when we create a task profile.
Regards,
Swetha

Hi Sweta,
The diferennce is Like we create different roles like store incharge and Store manager for Store manager there are list of activities that he can do like approve requests from store keeper and so on so these are Interface tasks as there are differences based on the roles of the employee but if a person can only create and not approve the transation then this is functional task difference

Difference between ACE module and ACE appliance

Hi All,
Can someone help to understand the difference between ACE module and ACE appliance, as i am observing ACE module is providing more throughput when compared the ACE appliance, Is the only advantage we getting with contexts ....
thanks inadvance,
Narayana Mallidi

Hi Narayan,
Apart from providing throughput, ACE module has more to offer ,
http://docwiki.cisco.com/wiki/Cisco_Application_Control_Engine_%28ACE%29_Troubleshooting_Guide_--_ACE_Resource_Limits
The above link will provide a comparision of ACE module and Ace appliance interms of scalability. Apart from that legacy modules wont support compression, but ACE 30 module can support compression.
The major advantage of ACE 30 module is with resepct to SSL throughput, SSL TPS, L4 & L7 CPS, & Concurent Connections per second, apart from the increased contexts
ACE 4710 Data Sheet :
http://www.cisco.com/en/US/prod/collateral/contnetw/ps5719/ps7027/Data_Sheet_Cisco_ACE_4710.html
ACE20 Data Sheet
http://www.cisco.com/en/US/prod/collateral/modules/ps2706/ps6906/product_data_sheet0900aecd8045861b.html
ACE 30 Data Sheet
http://www.cisco.com/en/US/prod/collateral/modules/ps2706/ps6906/data_sheet_c78_632383.html
Regards
Abijith

What is difference between User Exits and BAPI

hello sap gurus
what is difference between User Exits and BAPIs

http://www.sap-img.com/abap/what-is-user-exits.htm
www.****************
Where as this customer exits are again divided into:
1. Menu Exits.
2. Field Exits.
3. Screen Exits.
4. Function module exits.
These all the things comes under Enhancements.
User exits
1.A user exit is a three character code that instructs the system to access a program during system processing.SXX: S is for standard exits that are delivered by SAP.
XX represents the 2-digit exit number.UXX: U is for user exits that are defined by the user. XX represents the 2-digit exit number
2.USER EXITS are FORMS and are called by SAP standard programs
using PERFORM.
3.Inside the form (user exit) you can read and change almost
any global data from host program.
4. User exits are more flexible because you have more information to use in your code but on the other hand , it is very easy to manipulate erroneously global data and lead the standard program to a dump or even to make database inconsistent.
5.While changing User-exit,Access Key is required,
BAPI is nothing function module but which is remote enabled, means you can access this fm through other SAP or non-SAP system by assingning to business object,which we can crea in SWO1 transaction.
more details see WWW.****************
reward if helpful

Examples for using function modules and BApis.

My Dear FRNDS,
I am very new to ABAP. And I have read the documentation for function modules but i am not that clear to practice them.So I would be very happy if u people share a little bit of ur experience with me.
Please provide me some examples of all the use cases in function modules and specially exception handling.
Frnds, i am going to work with bapis so i feel practicing function module will give me a edge.
and please tell me after calling a BAPI FM why we have to perform 'BAPI_TRANSACTION_COMMIT' and 'BAPI_TRANSACTION_ROLLBACK'.
.Ur efforts will be greatly rewarded.
thx,
reshali

Hi,
Please check this sample codes.
DATA: BAPI_Z05DOGI_DELIVERY LIKE BAPIOBDLVHDRCON-DELIV_NUMB ,
BAPI_Z05DOGI_HEADER_DATA LIKE BAPIOBDLVHDRCON OCCURS 0 WITH HEADER LINE ,
BAPI_Z05DOGI_HEADER_CONTROL LIKE BAPIOBDLVHDRCTRLCON OCCURS 0 WITH HEADER LINE,
BAPI_Z05DOGI_ITEM_DATA LIKE BAPIOBDLVITEMCON OCCURS 0 WITH HEADER LINE,
BAPI_Z05DOGI_ITEM_CONTROL LIKE BAPIOBDLVITEMCTRLCON OCCURS 0 WITH HEADER LINE ,
BAPI_Z05DOGI_RETURN LIKE BAPIRET2 OCCURS 0 WITH HEADER LINE .
CLEAR: BAPI_Z05DOGI_DELIVERY , BAPI_Z05DOGI_HEADER_DATA , BAPI_Z05DOGI_HEADER_CONTROL , BAPI_Z05DOGI_ITEM_DATA ,BAPI_Z05DOGI_ITEM_CONTROL , BAPI_Z05DOGI_RETURN .
REFRESH: BAPI_Z05DOGI_HEADER_DATA , BAPI_Z05DOGI_HEADER_CONTROL , BAPI_Z05DOGI_ITEM_DATA , BAPI_Z05DOGI_ITEM_CONTROL , BAPI_Z05DOGI_RETURN .
BAPI_Z05DOGI_DELIVERY = ZMM_WB1-ISSUE .
BAPI_Z05DOGI_HEADER_DATA-DELIV_NUMB = ZMM_WB1-ISSUE.
APPEND BAPI_Z05DOGI_HEADER_DATA.
BAPI_Z05DOGI_HEADER_CONTROL-DELIV_NUMB = ZMM_WB1-ISSUE.
BAPI_Z05DOGI_HEADER_CONTROL-POST_GI_FLG = 'X'.
APPEND BAPI_Z05DOGI_HEADER_CONTROL.
BAPI_Z05DOGI_ITEM_DATA-DELIV_NUMB = ZMM_WB1-ISSUE.
BAPI_Z05DOGI_ITEM_DATA-DELIV_ITEM = 10.
BAPI_Z05DOGI_ITEM_DATA-DLV_QTY = LFIMGGIA.
BAPI_Z05DOGI_ITEM_DATA-SALES_UNIT = XTAB-MEINS.
BAPI_Z05DOGI_ITEM_DATA-DLV_QTY_IMUNIT = LFIMGGIA.
BAPI_Z05DOGI_ITEM_DATA-FACT_UNIT_NOM = UMVKZLIPS.
BAPI_Z05DOGI_ITEM_DATA-FACT_UNIT_DENOM = UMVKNLIPS.
APPEND BAPI_Z05DOGI_ITEM_DATA.
BAPI_Z05DOGI_ITEM_CONTROL-DELIV_NUMB = ZMM_WB1-ISSUE.
BAPI_Z05DOGI_ITEM_CONTROL-DELIV_ITEM = 10.
BAPI_Z05DOGI_ITEM_CONTROL-CHG_DELQTY = 'X'.
APPEND BAPI_Z05DOGI_ITEM_CONTROL.
CALL FUNCTION 'BAPI_OUTB_DELIVERY_CONFIRM_DEC'
EXPORTING
DELIVERY = BAPI_Z05DOGI_DELIVERY
HEADER_DATA = BAPI_Z05DOGI_HEADER_DATA
HEADER_CONTROL = BAPI_Z05DOGI_HEADER_CONTROL
TABLES
ITEM_DATA = BAPI_Z05DOGI_ITEM_DATA
ITEM_CONTROL = BAPI_Z05DOGI_ITEM_CONTROL
RETURN = BAPI_Z05DOGI_RETURN.
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
EXPORTING
WAIT = 'X'
IMPORTING
RETURN = BAPI_Z05DOGI_RETURN.
Go thru this link
http://www.planetsap.com/LIST_ALL_BAPIs.htm
BAPI_TRANSACTION_COMMIT
Execute external Commit when using BAPIs
This method executes a COMMIT WORK command. It is required for
transactions developed externally to the R/3 System that change data in
the R/3 System via BAPI calls.
When you call BAPIs in your program that change data in the R/3 System,
afterwards you must call this method to write the changes to the
database.
COMMIT WORK
The statement COMMIT WORK completes the current SAP LUW and opens a new one, storing all change requests for the currenta SAP LUW in the process
there are some FM that we use for creating trasaction . for example FM : that use for creating production order . if you execut the FM , the system will not create any data in the system so you need to excute the FM : BAPI_TRANSACTION_COMMIT to commit that creating the production order .
in case of commit work, that is a syntax in abap program . if you use this syntax after you insert ,update or delete table in the sap ,system will do it immediately otherwise the system will do it after execution is complete.
ROLLBACK WORK.
for confirming or undoing database updates. COMMIT WORK always concludes a database LUW and starts a new one. ROLLBACK WORK always undoes all changes back to the start of the database LUW.
Regards,
Raj.

Difference Between Function Module And BAPI

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