topic Re: BAPI in Application Development and Automation Discussions

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.

Example Code

U need to give the step_nr, item_nr, cond_count and cond_type so the correct conditon will be updated. If no condition exists for the given parameters, a new condition will be created.

U can find these parameters for a particular condition type in table KONV.

&----

*& Form saveTransactionJOCR

&----

text

----

--> p1 text
<-- p2 text

----

FORM saveTransactionJOCR .

data: salesdocument like BAPIVBELN-VBELN,

order_header_inx like bapisdh1x,

order_header_in like bapisdh1,

return type standard table of bapiret2 with header line,

conditions_in type standard table of bapicond with header line,

conditions_inx type standard table of bapicondx with header line,

logic_switch like BAPISDLS,

step_nr like conditions_in-cond_st_no,

item_nr like conditions_in-itm_number,

cond_count like conditions_in-cond_count,

cond_type like conditions_in-cond_type.

salesdocument = wa_order_information-VBELN.

LOGIC_SWITCH-COND_HANDL = 'X'.

order_header_inx-updateflag = 'U'.

conditions

clear conditions_in[].

clear conditions_inx[].

clear: step_nr,

item_nr,

cond_count,

cond_type.

step_nr = '710'.

item_nr = '000000'.

cond_count = '01'.

cond_type = 'ZCP2'.

CONDITIONS_IN-ITM_NUMBER = item_nr.

conditions_in-cond_st_no = step_nr.

CONDITIONS_IN-COND_COUNT = cond_count.

CONDITIONS_IN-COND_TYPE = cond_type.

CONDITIONS_IN-COND_VALUE = 666.

CONDITIONS_IN-CURRENCY = 'EUR'.

append conditions_in.

CONDITIONS_INX-ITM_NUMBER = item_nr.

conditions_inx-cond_st_no = step_nr.

CONDITIONS_INX-COND_COUNT = cond_count.

CONDITIONS_INX-COND_TYPE = cond_type.

CONDITIONS_INX-UPDATEFLAG = 'U'.

CONDITIONS_INX-COND_VALUE = 'X'.

CONDITIONS_INX-CURRENCY = 'X'.

append conditions_inx.

CALL FUNCTION 'BAPI_SALESORDER_CHANGE'

EXPORTING

SALESDOCUMENT = salesdocument

ORDER_HEADER_IN = order_header_in

ORDER_HEADER_INX = order_header_inx

LOGIC_SWITCH = logic_switch

TABLES

RETURN = return

CONDITIONS_IN = conditions_in

CONDITIONS_INX = conditions_inx

if return-type ne 'E'.

commit work and wait.

endif.

ENDFORM. " saveTransactionJOCR

Bdc to Bapi

The steps to be followed are :

1. Find out the relevant BAPI (BAPI_SALESORDER_CHANGE for VA02).

[for VA01 use BAPI_SALESORDER_CREATEFROMDAT2]

2. Create a Z program and call the BAPi (same as a Funtion module call).

2. Now, if you see this BAPi, it has

-> Importing structures.

eg: SALESDOCUMENT: this will take the Sales order header data as input.

-> Tables parameters:

eg: ORDER_ITEM_IN: this will take the line item data as input.

Note :

Only specify fields that should be changed

Select these fields by entering an X in the checkboxes

Enter a U in the UPDATEFLAG field

Always specify key fields when changing the data, including in the checkboxes

The configuration is an exception here. If this needs to be changed, you need to complete it again fully.

Maintain quantities and dates in the schedule line data

Possible UPDATEFLAGS:

U = change

D = delete

I = add

Example

1. Delete the whole order

2. Delete order items

3. Change the order

4. Change the configuration

Notes

1. Minimum entry:

You must enter the order number in the SALESDOCUMENT structure.

You must always enter key fields for changes.

You must always specify the update indicator in the ORDER_HEADER_INX.

2. Commit control:

The BAPI does not run a database Commit, which means that the application must trigger the Commit so that the changes are read to the database. To do this, use the BAPI_TRANSACTION_COMMIT BAPI.

For further details... refer to the Function Module documentation for the BAPi.

Bapi to VB(Visual Basic)

Long back I had used the following flow structure to acheive the same.

Report -> SM59 RFC destination -> COM4ABAP -> VB.exe

my report uses the rfc destination to create a COM session with com4abap. com4abap calls the vb.exe and manages the flow of data between sap and vb exe.

You need to have com4abap.exe

If com4abap is installed you will find it in sapgui installatin directory , C:\Program Files\SAPpc\sapgui\RFCSDK\com4abap.

else refer OSS note 419822 for installation of com4abap

after making the settings in com4abap to point to the vb program and setting up rfc destination in sm59 to point to com4abap session , you can use the following function modules to call the vb code.

for setting up com4abap and rfc destination please refer to the documentation for com4abap.

Invoke NEW DCOM session

call function 'BEGIN_COM_SESSION'

exporting

service_dest = service_dest "(this will be a RFC destination created in SM59)

importing

worker_dest = worker_dest

exceptions

connect_to_dcom_service_failed = 1

connect_to_dcom_worker_failed = 2

others = 3.

call function 'create_com_instance' destination worker_dest

exporting

clsid = g_c_clsid

typelib = g_c_typelib

importing

instid = g_f_oid

exceptions

communication_failure = 1 message g_f_msg

system_failure = 2 message g_f_msg

invalid_instance_id = 3

others = 4.

call function 'com_invoke' destination worker_dest

exporting

%instid = g_f_oid

%method = 'UpdatePDF'

sntemp = g_v_const_filent

snsysid = sy-sysid

snflag = 'N'

tables

rssaptable = g_t_pdfdetail1

%return = g_t_pdfdetail1 "t_test

exceptions

communication_failure = 1 message g_f_msg

system_failure = 2 message g_f_msg

invalid_instance_id = 3

others = 4.

then close the com session , using

FM delete_com_instance

FM END_COM_SESSION

if u need more info shoot me a test mail to callnaveen@gmail.com

if u find it useful mark the points

Regards,

Naveen

Re: BAPI

Former Member — Tue, 22 Aug 2006 05:14:27 GMT

HI,

Iam giving the answer to the best of my knowledge.

Definition

A Business Application Programming Interface (BAPI) is a precisely defined interface providing access to processes and data in business application systems such as R/3.

BAPIs are defined as API methods of SAP Objects. These objects and their BAPIs are described and stored in the BOR (BOR).

Use

BAPIs can be called within the R/3 System from external application systems and other programs. A BAPI call can either be made as an object oriented method call or as a remote function call (RFC).

BAPIs are a global communication standard for business applications.

Examples of what BAPIs can be used for include:

• R/3 satellite systems

• Distributed R/3 scenarios using Application Link Enabling (ALE)

• Connecting R/3 Systems to the Internet using Internet application components (IACs)

• Visual Basic programs as frontends to R/3 Systems

• Work flow applications that extend beyond system boundaries

• Customers' and partners' own developments

• Connections to non-SAP software

• Connections to legacy systems

BOR

Definition

The Business Object Repository (BOR) is the object oriented repository in the R/3 System. It contains, among other objects, SAP Business Objects and their methods.

In the BOR a Business Application Programming Interface (BAPI) is defined as an API method of an SAP Business Object. Thus defined, the BAPIs become standard with full stability guarantees as regards their content and interface.

Use

With regard to SAP Business Objects and their BAPIs, the BOR has the following functions:

• Provides an object oriented view of R/3 System data and processes.

R/3 application functions are accessed using methods (BAPIs) of SAP Business Objects. Implementation information is encapsulated; only the interface functionality of the method is visible to the user.

• Arranges the various interfaces in accordance with the component hierarchy, enabling functions to be searched and retrieved quickly and simply.

• Manages BAPIs in release updates.

BAPI interface enhancements made by adding parameters are recorded in the BOR. Previous interface versions can thus be reconstructed at any time.

When a BAPI is created the release version of the new BAPI is recorded in the BOR. The same applies when any interface parameter is created.

The version control of the function module that a BAPI is based on is managed in the Function Builder.

• Ensures interface stability.

Any interface changes that are carried out in the BOR, are automatically checked for syntax compatibility against the associated development objects in the ABAP Dictionary.

Defining and Implementing the BAPI

Purpose

A BAPI is an API method of a business object and is defined as such in the Business Object Repository (BOR). However, a BAPI is implemented as an RFC capable function module which is maintained in the Function Builder.

For function modules that implement BAPIs certain standards and rules must be adhered to over and above the standard programming rules for function modules. This section describes how to define a BAPI and which particular guidelines to comply with.

When implementing BAPIs follow the requirements below to ensure you achieve consistent behavior and representation of BAPIs as object oriented methods of SAP Business Objects.

There is a range of BAPIs that provide basic functions and these can be implemented for most of the SAP Business Objects. For information on these BAPIs see the section Frequently Used BAPIs. Check if the BAPI you want to implement is in one of these general categories.

Process Flow

The process of defining and implementing a BAPI consists of the following steps:

• Describing the Scenario the BAPI is Used in

• Reviewing the BAPI Concept and BAPI Scenario

• Defining a BAPI and Its Interface

• Creating Individual Programming Objects

• Testing the BAPI

• Releasing and Freezing the BAPI

Re: BAPI

uwe_schieferstein — Tue, 22 Aug 2006 06:58:44 GMT

Hello Manikandan

BAPIs are standardized function modules that are RFC-enabled. They allow us to access SAP business objects (e.g. SAP user) from external systems, similar like we handle the business objects in dialog transactions.

BAPIs are much more scrupulous about validating the incoming data than "normal" RFC-enabled function modules, like the foreign key checks on a dynpro.

I like to think of BAPIs as "Dialog without dialog". The behaviour, in terms of assuring the integrity of the data, is the same whether we use the dialog transaction or the corresponding BAPI.

Regards

Uwe

Re: BAPI

Former Member — Wed, 30 Aug 2006 13:49:04 GMT

BAPI's are remote enabled functional modules which can be used to pass information from SAP to SAP as well as pgm in languaes like JAVA or VB.

Now a days BAPI's are used mostly in XI as well as Web Dynpro

You can check following web log for how BAPI is used in XI

/people/arpit.seth/blog/2005/06/27/rfc-scenario-using-bpm--starter-kit