topic Re: Remote Function module in Application Development and Automation Discussions

Remote Function module

Former Member — Wed, 20 Feb 2008 21:06:07 GMT

Can any one tell me breifly about BAPI?????

I would like to know the difference between the Remote Fun. Module and BAPI.

Re: Remote Function module

Former Member — Wed, 20 Feb 2008 21:25:21 GMT

Hi,

BAPI's are Remote Enabled Function modules which can be called from External system like JAVA , .net etc.

These are stored as the methods of the business object say like PO, SO etc in the BOR (Business object Repository)

You can say BAPI's are subsets of RFC.

BAPI's are created in SE37 prety much same as the normal modules. But you have to pick a radio button for "Remote"

There are some standard BAPI's like Get List(), Get Detail() etc.

You can do more research in Tcode "BAPI".

I hope it helps.

thanks

Re: Remote Function module

Former Member — Wed, 20 Feb 2008 23:09:14 GMT

• BAPI/RFC Interface

A remote function call is a call to a function module running in a system different from the caller's.

The remote function can also be called from within the same system (as a remote call), but usually caller and callee will be in different systems.

In the SAP System, the ability to call remote functions is provided by the Remote Function Call interface system (RFC). RFC allows for remote calls between two SAP Systems (R/3 or R/2), or between an SAP System and a non-SAP System.

RFC consists of the following interfaces:-

A calling interface for ABAP programs

Any ABAP program can call a remote function using the CALL FUNCTION...DESTINATION statement. The DESTINATION parameter tells the SAP System that the called function runs in a system other than the caller's.

RFC communication with the remote system happens as part of the CALL FUNCTION statement.

RFC functions running in an SAP System must be actual function modules, and must be registered in the SAP System as "remote".

When both caller and called program are ABAP programs, the RFC interface provides both partners to the communication. The caller may be any ABAP program, while the called program must be a function module registered as remote.

Calling interfaces for non-SAP programs

When either the caller or the called partner is a non-ABAP program, it must be programmed to play the other partner in an RFC communication.

To help implement RFC partner programs in non-SAP Systems, SAP provides-

External Interfaces

RFC-based and GUI-based interfaces can be used by external programs to call function modules in SAP R/2 or R/3 systems and execute them in these systems.

Vice versa, ABAP programs in R/2 or R/3 can use the functions provided by external programs via these interfaces.

Re: Remote Function module

Former Member — Wed, 20 Feb 2008 23:11:52 GMT

what is 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. 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.

The following standardized BAPIs are provided:

Reading instances of SAP business objects

GetList ( ) With the BAPI GetList you can select a range of object key values, for example, company codes and material numbers.

The BAPI GetList() is a class method.

GetDetail() With the BAPI GetDetail() the details of an instance of a business object type are retrieved and returned to the calling program. The instance is identified via its key. The BAPI GetDetail() is an instance method. BAPIs that can create, change or delete instances of a business object type

The following BAPIs of the same object type have to be programmed so that they can be called several times within one transaction. For example, if, after sales order 1 has been created, a second sales order 2 is created in the same transaction, the second BAPI call must not affect the consistency of the sales order 2. After completing the transaction with a COMMIT WORK, both the orders are saved consistently in the database.

Create( ) and CreateFromData! ( )

The BAPIs Create() and CreateFromData() create an instance of an SAP business object type, for example, a purchase order. These BAPIs are class methods.

Change( )

The BAPI Change() changes an existing instance of an SAP business object type, for example, a purchase order. The BAPI Change () is an instance method.

Delete( ) and Undelete( ) The BAPI Delete() deletes an instance of an SAP business object type from the database or sets a deletion flag.

The BAPI Undelete() removes a deletion flag. These BAPIs are instance methods.

Cancel ( ) Unlike the BAPI Delete(), the BAPI Cancel() cancels an instance of a business object type. The instance to be cancelled remains in the database and an additional instance is created and this is the one that is actually canceled. The Cancel() BAPI is an instance method.

Add<subobject> ( ) and Remove<subobject> ( ) The BAPI Add<subobject> adds a subobject to an existing object inst! ance and the BAPI and Remove<subobject> removes a subobject from an object instance. These BAPIs are instance methods.

BAPI-step by step

http://www.sapgenie.com/abap/bapi/example.htm

just refer to the link below

http://www.sapmaterial.com/?gclid=CN322K28t4sCFQ-WbgodSGbK2g

list of all bapis

http://www.planetsap.com/LIST_ALL_BAPIs.htm

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.BAPI is having all Key fields, methods, interfaces etc.

Regards

Re: Remote Function module

Former Member — Thu, 21 Feb 2008 01:29:34 GMT

Hi Sukumar

RFC [ Remote Function Call] - In this method u can call Remote function module with in SAP and Related technologies .this must be same structure between both sending and calling system . Ucan access data from existing data base system to non existing database sytem with RFConnection .

BAPI [ Business Application Programming INterface] - It creates an API to interface between two systems what ever the system table structure . it communicate with Gui and Application as well as .

U can utilize to communicate from SAP to JAVA[ Non-SAP ] or Vice -Versa.It will be creted by SAP Standard u can implement that bapi when ever it requires .............

if it useful reward me .

thanks,

Suresh