Regarding Data Transfer

Former Member — Thu, 14 Jun 2007 05:29:39 GMT

Hi Expert,

i want to know that when to use BDC,BAPI,ALE/IDOCS for data tarnsfer and is there any other technique for data transfer.

thanks and regards

abaper

Re: Regarding Data Transfer

Former Member — Thu, 14 Jun 2007 05:47:56 GMT

BDC - can be used for data transfer through standard transcation and z transcations.

But it is always good to use BAPI or someother standard method such as BAPI.

BAPI - is the standard business logic coded with use of screen. so it can be used when you need to transfer data through standard transcations.

ALE/IDOC - when data needs to be transferred through standard transcation but across the systems ( can be sap or other than sap system or across the clients)

Re: Regarding Data Transfer

Former Member — Thu, 14 Jun 2007 05:59:23 GMT

hi,

<b>BDC:</b> used to transfer data from legacy system to sap only.we can transfer data through standard tcodes as well as custom applications

se of methods depending upon amount;

if you have run time validation while updating the data into SAP R/3 Transaction,then use BDC Call Transaction.

example : when you load the data into Sales order then you need to load the into Header text of sales order.

for this ,you have to use Update Mode 'S'.

it is online update and if you small amount of data ,then prefer this one

2. If you have huge amount of data and then prefer Session Method.

we have one more advantage in session method...

suppose file has 1,00,000 records and the if you use all the records at time,then you will get short dump like system time exceed .

then you can split the each 10,000 records into one session and will process.

3. Direct Input method : we prefer this method only few Transaction ,

this will not applicable to when system has customer fields .

BAPI -

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.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.

It is the standard business logic coded with use of screen. so it can be used when you need to transfer data through standard transcations.

ALE/IDOC - used to transfer data between distributed systems or sap to other system or across clients.

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