topic Re: BAPI vs BDC in Application Development and Automation Discussions

BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:10:26 GMT

Hi experts,

Which is better to use BAPI or BDC?

Regards,

Nmc

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:13:03 GMT

BAPI ,

Then Standard BDC

Then Specifc BDC!

BAPI are made in order to work correctly even after a SAP realease change. Moreover, a bapi includes the same rules as the Txn.

Erwan

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:14:01 GMT

hi marc,

If you have possibility to use bapi then its better to go for bapi rather than bdc the main difference between these two is

If any upgradations are made in the system then bdc programs willnot work properly where as bapi's will support the upgradations

if you don't have standard bapi better to go with bdc

if you find it useful mark the points

Regards,

Naveen

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:15:45 GMT

hi,

If there is one then defenitly BAPI.

Also many times you might not have all the data which is required by the BAPI to successfully run.

A BDC is conv when u have less fields or when there's no BAPI existing.

A BDC cannot be called form some other language as an object but BAPI is an object and has methods which can be called.

hope this helps,

santhosh

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:18:17 GMT

BAPI is better one than BDC....When u have internal table, using BAPI directly loads data to sap but where as for BDC u have to write hughe code etc....

Check below links which will give u better idea...

/message/2272598#2272598 [original link is broken]

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:26:33 GMT

Hi shaik,

1. Which is better to use BAPI or BDC?

BAPI is always better.

2. a) Very easy to use (Just like FM)

b) In future, if screen sequence changes, then we have to change BDC,

whereas sap guarantees the corresponding compatibilty/change

in BAPI.

c) Recording/screen sequence/programname/screen fieldname,

--- all these things are not required to be explored & recorded.

regards,

amit m.

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 08:30:20 GMT

HI Mark,

BAPI vs BDC

SAP usually upgrade their Version, so each and every time they will change the screens .so you have to change your BDC programs accordingly ,tis is not the case with BAPI .

CHK THIS LINKS:

<a href="http://www.sapgenie.com/abap/bapi/example.htm">http://www.sapgenie.com/abap/bapi/example.htm</a>

<a href="http://sappoint.com/abap/">http://sappoint.com/abap/</a>

shan

Re: BAPI vs BDC

Sandeep_Panghal — Fri, 24 Nov 2006 08:54:33 GMT

Hi Marc,

Hope tillnow u have got the amswer as BAPI is definitely the best option .

Moreover BAPIs are the business interfaces provided by SAP so no coding involved , but in case of BDC uhave to code it .

Also , with upgrades BDC code needs to be readjusted but no such effort involved in case of BAPIs.

Hope this helps.

Sands

Re: BAPI vs BDC

anversha_s — Fri, 24 Nov 2006 08:58:47 GMT

hi,

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.

Check these Links out

http://searchsap.techtarget.com/ateQuestionNResponse/0,289625,sid21_cid558752_tax293481,00.html

http://www.sap-img.com/abap/interview-question-on-bapi-rfc-abap-objects-tables.htm

http://www.sap-img.com/fu033.htm

http://www.sap-img.com/abap/ale-bapi.htm

Please check out this thread..

Also refer to the following links..

www.sappoint.com/abap/bapiintro.pdf

www.sap-img.com/bapi.htm

www.sap-img.com/abap/bapi-conventions.htm

www.planetsap.com/Bapi_main_page.htm

www.sapgenie.com/abap/bapi/index.htm

Checkout !!

http://searchsap.techtarget.com/originalContent/0,289142,sid21_gci948835,00.html

http://techrepublic.com.com/5100-6329-1051160.html#

http://www.sap-img.com/bapi.htm

http://www.sap-img.com/abap/bapi-conventions.htm

http://www.sappoint.com/abap/bapiintro.pdf

Java Connector(JCO) can call not only BAPI's but also the function modules which are remotely enabled..

BAPI's as i said earlier are remotely enabled function modules..

Hence, JCO can call also BAPI's(n not only BAPI's as u mentioned).

Check the following BDC over 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.

***pls assign the points if info is useful**

rgds

Anver

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 09:14:28 GMT

Hi,

Obivious, BAPI.

A BAPI is faster because it is updating the DB directly And in Version Conversion, Data Will remain And no changes needed.

Where as BDC is simply, Updating the screens. And not supported in version conversion.

Means Upgradation EX: from 4.6c to 4.7

Thanks,

MAnju,

Helpful, Reward Points.

Re: BAPI vs BDC

Former Member — Fri, 24 Nov 2006 09:16:15 GMT

One thing to remember though. If you use a BAPI and the posting fails. Then you may need to develop a process in which the data can be re-processed. You would get this functionality with BDC (SM35) but not with a BAPI.