diff between RFC and BAPI

[Former Member]

HI

MAY,I KNOW THE DIFFERENCE BETWEEN AN RFC AND A BAPI

THANKS IN ADVANCE

[Former Member]

Hi,

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.

Thanks.

[Former Member]

hi,

BAPI is RFC but it need object which should b register into BOR ( Businesss Object Repository ) .

And this object is use to call BAPI from Non Sap system while in RFC, we dont need any object..it is a direct call...

[Former Member]

BAPI:

BAPI is an API method of a business object which intern is a RFC enabled function module. Business objects are objects in their own sense which involve with a business process.

BAPI (Business Application Programming Interface) is an API method of a business object which intern is a RFC enabled Function Module.

Business Objects are the Objects which has business sence associated to it. Ex. Sales Orders, Purchase Orders etc.

The Properties of BAPI are:

Every BAPI name should start with letters 'BAPI'.

It is an API method of a Business Object.

it does not contain a internal COMMIT statement in the Function Module.

It does not contain "CALL TRANSACTION" statements.

BAPI do not raise 'EXCEPTIONS'.

a RETURN structure is defined as an interface parameter of a BAPI which is used to log all the errors, warnings and the successful processes tha are triggered in the course of execution of a BAPI.

A successful execution of a BAPI requires the data to be commited and this process of performing a COMMIT is achieved by calling the BAPI_TRANSACTION_COMMIT' explicitly if there are no errors logged in the RETURN structure.

There are two types of BAPI's: Instance Dependent & Instance Independent.

BAPI provides an access to the SAP system for external applications to have the business data processed in the form of web services. When BAPI's are used to post the data in SAP system these are used as Function Modules.

RFC:

Remote Function Call (RFC) 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, but usually caller and callee will be in differene system. RFC allows for remote calls between two SAP Systems (R/3 or R/2) or between an SAP System and a non-SAP System.

FUNCTION MODULE:

Function modules are special external subroutine stored in a central library. The R/3 system provides numerous predefined functin modules that you can call from your ABAP/4 programs. The function modules have global presence and can return value.

Regards.

[Former Member]

hi,

the above thread will useful for you

regards,

pavan

[Former Member]

Hi,

Few diff btween bapi and RFC are

bapi should be registered in BOR

bapi should not use call transcation

bapi should not use dialog screens

bapi should not use update function modules

basically bapis are used to call from other systems other than sap using methods .

regards,

siva chalasani.

[Former Member]

Hi,

BAPI stands for Business Application Programming Interface. It is a library of functions that are released to the public as an interface into an existing SAP system from an external system.

RFC is the protocol used to call functions in an R/3 system by a caller external to R/3 or to call programs external to R/3 from an R/3 system.

Functions can only be called via RFC, if they are tagged as RFC functions in the SAP development workbench. They are then called RFC function modules. BAPIs are complete sets of (BAPI) function modules that model a business application.

When you are familiar with web developments: RFC can be compared to HTTP and BAPIs are CGI applications.

In other words: A BAPI function is a function module that can be called remotely using the RFC technology.

Hope this help u

Reward points if useful

Regards,