topic Re: hi in Application Development and Automation Discussions

hi

Former Member — Tue, 01 Apr 2008 11:22:48 GMT

deference between BAPI and RFC ?

Re: hi

Former Member — Tue, 01 Apr 2008 11:25:07 GMT

RFC Vs BAPI

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 you 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. It is not possible to connect SAP to Non-SAP systems to retrieve data using RFC alone. RFC can acces the SAP from outside only through BAPI and same is for vice versa access.

RFC is the protocol used by SAP for remote communication, that is, for communications between remote (independent) systems. RFC is used for communications between two independent SAP systems, or for communications between an SAP system and a non-SAP system, such as an external application. It can also be used for communications between modules on the same system. Using the RFC interfaces you can extend the functionality of R/3 applications from an external program.

plz reward if useful,

vivek

Edited by: Vivek Gaur on Apr 1, 2008 1:26 PM

Re: hi

ak_upadhyay — Tue, 01 Apr 2008 11:26:14 GMT

Hi,

BAPI is used only when it is available for the particular transaction like Delivery Sales order. but BDC can be used for any

transaction which have screen and fields.

BAPI is directly updated the database instead BDC run through the screen flow.

So BAPI can't handle all the flow logic checking and enhancement put by programmer to faciliate the user requirement

An RFC, or Remote Function Call, describes an external interface to a system function module available in SAP. For example, getting the system parameters is a system function available via RFC.

Reward points if useful....

Regards

Re: hi

Former Member — Tue, 01 Apr 2008 11:27:23 GMT

Hi,

1)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 ( ) and Remove ( ) The BAPI Add adds a

subobject to an existing object inst! ance and the BAPI and

Remove removes a subobject from an object instance. These BAPIs

are instance methods.

2) No it is not possible to connect SAP to Non-SAP systems to retrieve data

using RFC alone. RFC can acces the SAP from outside only through BAPI and

same is for vice versa access.

3) Each Bapi Object has Interface, Key Fields, Attributes,Methods and

Events.

Bapi Function Modules can be attached to these Bapi objects .Function module

has a single bound functionality while a BAPI object can contain many

functionalities

rgds,

bharat.

Re: hi

Former Member — Tue, 01 Apr 2008 11:33:45 GMT

hi,

these type of question go to google first..............

if you not find ans than write on SDN

OK MAN

nice suggetion na

now give reward points

pankaj