What are idocs, BAPI, RFC?

[Former Member]

Hi,

What are idocs, BAPI, RFC?

Regards,

anuj

[Former Member · Accepted solution]

Hi,

IDOC:

IDocs (Intermediate Documents) are the crux of ALE. These are the documents with the help of which data is exchanged between SAP R/3 and non-R/3 systems. As the name suggests, these documents act as intermediate storage of information, which can be sent bi-directionally. Message types are responsible for creation of Idocs.

Components of IDOCS:

An IDoc is made up of the following parts:

Control Record: This section contains control information regarding the Idoc. Its constituents are Sender’s name, Receiver name, Message type and Idoc type. The format of the control record is similar for all IDoc types.

Data Segment: It consists of a header that contains the identity of the Idoc. Its constituents include, a sequential segment number, a segment type description and field containing the actual data of the segment.

Status records: The status record shows the information regarding the already processed stages and remaining processing stages of the Idoc. It has an identical format for each IDoc type.

RFC:

RFC --- > Function module and general will be used to make call to function

sending the function (XI has RFC adapter)

BAPI:

BAPI ---> Other version of RFC (Objected oriented) mostly we will use for Sync

calls (Mostly in XI using proxies we will call BAPI's)

Refer these links for more details:

http://sapabap.iespana.es/sapabap/sap/faq/ale_idocs_bapi.htm

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

BAPI Vs IDOC - in detail

http://searchsap.techtarget.com/tip/1,289483,sid21_gci824860,00.html

/thread/127699 [original link is broken]

Please search in SDN, before posting queries. You find the same is been answered so many times.

Regards,

Nithiyanandam

[rodrigoalejandro_pertierr]

hi,

se this, hope helps

Thanks

Rodrigo

[Former Member]

Hi

kindly search in SDN you will get all the information about what u are looking for .

https://www.sdn.sap.com

The same links and blogs u can also see through that link

All the best

Regards,

Azeez khan.

[Former Member]

You can also check out following threads, there are lots n lots of materials you can search it out even in Forums.

BADI Step by Step Implementation.

http://www.esnips.com/doc/e06e4171-29df-462f-b857-54fac19a9d8e/ppt-on-badis.ppt

http://www.esnips.com/doc/10016c34-55a7-4b13-8f5f-bf720422d265/BADIs.pdf

http://www.esnips.com/doc/43a58f51-5d92-4213-913a-de05e9faac0d/Business-Addin.doc

http://www.esnips.com/doc/1e10392e-64d8-4181-b2a5-5f04d8f87839/badi.doc

www.sapgenie.com/publications/saptips/022006%20-%20Zaidi%20BADI.pdf

http://www.sapdevelopment.co.uk/enhance/enhance_badi.htm

http://help.sap.com/saphelp_nw04/helpdata/en/04/f3683c05ea4464e10000000a114084/content.htm

http://help.sap.com/saphelp_nw04/helpdata/en/e6/d54d3c596f0b26e10000000a11402f/content.htm

http://help.sap.com/saphelp_nw2004s/helpdata/en/c2/eab541c5b63031e10000000a155106/frameset.htm

http://help.sap.com/saphelp_nw04/helpdata/en/04/f3683c05ea4464e10000000a114084/content.htm

http://help.sap.com/saphelp_nw04/helpdata/en/e6/63ee7f486cc143a560799d8803ce29/content.htm

https://www.sdn.sap.com/irj/sdn/wiki?path=/display/srm/badi-general+information&

http://www.esnips.com/doc/e06e4171-29df-462f-b857-54fac19a9d8e/ppt-on-badis.ppt

http://www.esnips.com/doc/10016c34-55a7-4b13-8f5f-bf720422d265/BADIs.pdf

http://www.esnips.com/doc/43a58f51-5d92-4213-913a-de05e9faac0d/Business-Addin.doc

http://www.esnips.com/doc/1e10392e-64d8-4181-b2a5-5f04d8f87839/badi.doc

www.sapgenie.com/publications/saptips/022006%20-%20Zaidi%20BADI.pdf

http://www.sapdevelopment.co.uk/enhance/enhance_badi.htm

http://help.sap.com/saphelp_nw04/helpdata/en/04/f3683c05ea4464e10000000a114084/content.htm

http://help.sap.com/saphelp_nw04/helpdata/en/e6/d54d3c596f0b26e10000000a11402f/content.htm

http://help.sap.com/saphelp_nw2004s/helpdata/en/c2/eab541c5b63031e10000000a155106/frameset.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/73/7e7941601b1d09e10000000a155106/frameset.htm

http://support.sas.com/rnd/papers/sugi30/SAP.ppt

http://www.sts.tu-harburg.de/teaching/sap_r3/ABAP4/abapindx.htm

http://members.aol.com/_ht_a/skarkada/sap/

http://www.ct-software.com/reportpool_frame.htm

http://www.saphelp.com/SAP_Technical.htm

http://www.kabai.com/abaps/q.htm

http://www.guidancetech.com/people/holland/sap/abap/

http://www.planetsap.com/download_abap_programs.htm

http://help.sap.com/saphelp_nw04/helpdata/en/c8/1975cc43b111d1896f0000e8322d00/content.htm

http://www.allsaplinks.com/badi.html

/people/thomas.weiss/blog/2006/04/03/how-to-define-a-new-badi-within-the-enhancement-framework--part-3-of-the-serieshttps [original link is broken]:///people/alwin.vandeput2/blog/2006/04/13/how-to-search-for-badis-trace-it

/people/thomas.weiss/blog/2006/04/18/how-to-implement-a-badi-and-how-to-use-a-filter--part-4-of-the-series-on-the-new-enhancement-framework /people/thomas.weiss/blog/2006/05/03/source-code-enhancements--part-5-of-the-series-on-the-new-enhancement-framework

http://www.esnips.com/doc/e06e4171-29df-462f-b857-54fac19a9d8e/ppt-on-badis.ppt

http://www.esnips.com/doc/10016c34-55a7-4b13-8f5f-bf720422d265/BADIs.pdf

http://www.esnips.com/doc/43a58f51-5d92-4213-913a-de05e9faac0d/Business-Addin.doc

http://www.esnips.com/doc/1e10392e-64d8-4181-b2a5-5f04d8f87839/badi.doc

http://www.esnips.com/doc/3b7bbc09-c095-45a0-9e89-91f2f86ee8e9/BADI-Introduction.ppt

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/40921dd7-d5cf-2910-1894-bb62316a...

http://help.sap.com/saphelp_erp2005/helpdata/en/73/7e7941601b1d09e10000000a155106/frameset.htm

http://support.sas.com/rnd/papers/sugi30/SAP.ppt

http://www.sts.tu-harburg.de/teaching/sap_r3/ABAP4/abapindx.htm

http://members.aol.com/_ht_a/skarkada/sap/

http://www.ct-software.com/reportpool_frame.htm

http://www.saphelp.com/SAP_Technical.htm

http://www.kabai.com/abaps/q.htm

http://www.guidancetech.com/people/holland/sap/abap/

http://www.planetsap.com/download_abap_programs.htm

http://help.sap.com/saphelp_nw04/helpdata/en/c8/1975cc43b111d1896f0000e8322d00/content.htm

/people/thomas.weiss/blog/2006/04/03/how-to-define-a-new-badi-within-the-enhancement-framework--part-3-of-the-series

/people/thomas.weiss/blog/2006/04/18/how-to-implement-a-badi-and-how-to-use-a-filter--part-4-of-the-series-on-the-new-enhancement-framework

http://esnips.com/doc/e06e4171-29df-462f-b857-54fac19a9d8e/ppt-on-badis.ppt

http://esnips.com/doc/43a58f51-5d92-4213-913a-de05e9faac0d/Business-Addin.doc

http://esnips.com/doc/10016c34-55a7-4b13-8f5f-bf720422d265/BADIs.pdf

http://esnips.com/doc/1e10392e-64d8-4181-b2a5-5f04d8f87839/badi.doc

http://esnips.com/doc/365d4c4d-9fcb-4189-85fd-866b7bf25257/customer-exits--badi.zip

http://esnips.com/doc/3b7bbc09-c095-45a0-9e89-91f2f86ee8e9/BADI-Introduction.ppt

http://help.sap.com//saphelp_470/helpdata/EN/eb/3e7cee940e11d295df0000e82de14a/frameset.htm

Difference Between BADI and User Exits

http://www.sap-img.com/abap/difference-between-badi-and-user-exits.htm

Welcome for further queries

Regards,

Sushama

[Former Member]

hi,

IDOCS are used for aynchronus scenario.

they carry the data which is supplied by Funtional Module.

RFC(Remote Functional Call) are used for synchronus scenario.

(it's genrally a FUNTIONAL MODULE which is ready in use by others(other systems) apart from local users(local system))

BAPI(Business Application Programming Interface)

similar to RFC but these are the reports(not exactly Functional Module) which are used in synchronus scenarios like proxies.)

Thanks & Regards,

Rama Krishna

[Former Member]

Hii,

BAPIs and RFCs are the functions exposed by SAP, when it comes to the integration part, you have to know that particular BAPI or RFC. For example, if you want to get table data or want to query to the SAP table then you use RFC_READ_TABLE. Similarly if you want to know whether customer is existing, you need to know which RFC/BAPI has this info. May I know which tool are you using, are you talking about generating a proxy and playing around that.

Data Creation in Idoc

IDocs are text encoded documents with a rigid structure that are used to exchange data between R/3 and a foreign system. Instead of calling a program in the destination system directly, the data is first packed into an IDoc and then sent to the receiving system, where it is analyzed and properly processed. Therefore an IDoc data exchange is always an

asynchronous process. The significant difference between simple RFC-calls and IDoc data exchange is the fact, that every action performed on IDocs are protocolled by R/3 and IDocs can be reprocessed if an error occurred in one of the message steps.

While IDocs have to be understood as a data exchange protocol, EDI and ALE are typical use cases for IDocs. R/3 uses IDocs for both EDI and ALE to deliver data to the receiving system. ALE is basically the scheduling mechanism that defines when and between which partners and what kind of data will be exchanged on a regular or event triggered basis. Such a set-up is called an ALE-scenario.

IDoc is a intermediate document to exchange data between two SAP Systems.

*IDocs are structured ASCII files (or a virtual equivalent).

*Electronic Interchange Document

*They are the file format used by SAP R/3 to exchange data with foreign systems.

*Data Is transmitted in ASCII format, i.e. human readable form

*IDocs exchange messages

*IDocs are used like classical interface files

IDOC types are templates for specific message types depending on what is the business document, you want to exchange.

WE30 - you can create a IDOC type.

An IDOC with data, will have to be triggered by the application that is trying to send out the data.

FOr testing you can use WE19.

How to create idoc?

*WE30 - you can create a IDOC type

For more information in details on the same along with the examples can be viewed on:

http://www.netweaverguru.com/EDI/HTML/IDocBook.htm#_Toc8400404

http://help.sap.com/saphelp_erp2005/helpdata/en/0b/2a6620507d11d18ee90000e8366fc2/frameset.htm

http://www.sappoint.com/presentation.html

http://www.allsaplinks.com/idoc_search.html

http://www.sapgenie.com/sapedi/idoc_abap.htm

http://www.erpgenie.com/sapedi/idoc_abap.htm

To Create Idoc we need to follow these steps:

Create Segment ( WE31)

Create Idoc Type ( WE30 )

Create Message Type ( WE81 )

Assign Idoc Type to Message Type ( WE82 )

Creating a Segment

Go to transaction code WE31

Enter the name for your segment type and click on the Create icon

Type the short text

Enter the variable names and data elements

Save it and go back

Go to Edit -> Set Release

Follow steps to create more number of segments

Create IDOC Type

Go to transaction code WE30

Enter the Object Name, select Basic type and click Create icon

Select the create new option and enter a description for your basic IDOC type and press enter

Select the IDOC Name and click Create icon

The system prompts us to enter a segment type and its attributes

Choose the appropriate values and press Enter

The system transfers the name of the segment type to the IDOC editor.

Follow these steps to add more number of segments to Parent or as Parent-child relation

Save it and go back

Go to Edit -> Set release

Create Message Type

Go to transaction code WE81

Change the details from Display mode to Change mode

After selection, the system will give this message “The table is cross-client (see Help for further info)”. Press Enter

Click New Entries to create new Message Type

Fill details

Save it and go back

Assign Message Type to IDoc Type

Go to transaction code WE82

Change the details from Display mode to Change mode

After selection, the system will give this message “The table is cross-client (see Help for further info)”. Press Enter.

Click New Entries to create new Message Type.

Fill details

Save it and go back

Check these out..

Check below link. It will give the step by step procedure for IDOC creation.

http://www.supinfo-projects.com/cn/2005/idocs_en/2/

ALE/ IDOC

http://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm

http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.doc

http://edocs.bea.com/elink/adapter/r3/userhtm/ale.htm#1008419

http://www.netweaverguru.com/EDI/HTML/IDocBook.htm

http://www.sapgenie.com/sapedi/index.htm

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

http://www.sappoint.com/abap/ale2.pdf

http://www.sapgenie.com/sapedi/idoc_abap.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/0b/2a60bb507d11d18ee90000e8366fc2/frameset.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/78/217da751ce11d189570000e829fbbd/frameset.htm

http://www.allsaplinks.com/idoc_sample.html

http://www.sappoint.com/abap.html

http://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm

http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.doc

http://edocs.bea.com/elink/adapter/r3/userhtm/ale.htm#1008419

http://www.netweaverguru.com/EDI/HTML/IDocBook.htm

http://www.sapgenie.com/sapedi/index.htm

http://www.allsaplinks.com/idoc_sample.html

http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.docs

go trough these links.

http://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm

http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.doc

http://edocs.bea.com/elink/adapter/r3/userhtm/ale.htm#1008419

http://www.netweaverguru.com/EDI/HTML/IDocBook.htm

http://www.sapgenie.com/sapedi/index.htm

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

http://www.sappoint.com/abap/ale2.pdf

http://www.sapgenie.com/sapedi/idoc_abap.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/0b/2a60bb507d11d18ee90000e8366fc2/frameset.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/78/217da751ce11d189570000e829fbbd/frameset.htm

http://www.allsaplinks.com/idoc_sample.html

http://www.sappoint.com/abap.html

http://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm

http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.doc

http://edocs.bea.com/elink/adapter/r3/userhtm/ale.htm#1008419

http://www.netweaverguru.com/EDI/HTML/IDocBook.htm

http://www.sapgenie.com/sapedi/index.htm

http://www.allsaplinks.com/idoc_sample.html

http://http://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm

An IDoc is simply a data container that is used to exchange information between any two processes that can understand the syntax and semantics of the data...

1.IDOCs are stored in the database. In the SAP system, IDOCs are stored in database tables.

2.IDOCs are independent of the sending and receiving systems.

3.IDOCs are independent of the direction of data exchange.

The two available process for IDOCs are

Outbound Process

Inbound Process

AND There are basically two types of IDOCs.

Basic IDOCs

Basic IDOC type defines the structure and format of the business document that is to be exchanged between two systems.

Extended IDOCs

Extending the functionality by adding more segments to existing Basic IDOCs.

To Create Idoc we need to follow these steps:

Create Segment ( WE31)

Create Idoc Type ( WE30)

Create Message Type ( WE81)

Assign Idoc Type to Message Type ( WE82)

imp links

http://www.allsaplinks.com/idoc_sample.html

http://www.sapgenie.com/sapedi/idoc_abap.htm

www.sappoint.com

--here u can find the ppts and basic seetings for ALE

http://sappoint.com/presentation.html

www.sapgenie.com

http://www.sapgenie.com/ale/index.htm

WE30 - you can create a IDOC type.

An IDOC with data, will have to be triggered by the application that is trying to send out the data.

Try this..Hope this will help.

SAP ALE & IDOC<<<<

Steps to configuration(Basis) >>

1. Create Logical System (LS) for each applicable ALE-enabled client

2. Link client to Logical System on the respective servers

3. Create background user, to be used by ALE(with authorizaton for ALE postings)

4. Create RFC Destinations(SM59)

5. Ports in Idoc processing(WE21)

6. Generate partner profiles for sending system

The functional configuration(Tcode: SALE)

• Create a Customer Distribution Model (CDM);

• Add appropriate message types and filters to the CDM;

• Generate outbound partner profiles;

• Distribute the CDM to the receiving systems; and

• Generate inbound partner profiles on each of the clients.

Steps to customize a new IDoc >>>

1. Define IDoc Segment (WE31)

2. Convert Segments into an IDoc type (WE30)

3. Create a Message Type (WE81)

4. Create valid Combination of Message & IDoc type(WE82)

5. Define Processing Code(WE41 for OUT / WE42 for IN)

6. Define Partner Profile(WE20)

Important Transaction Codes:

SALE - IMG ALE Configuration root

WE20 - Manually maintain partner profiles

BD64 - Maintain customer distribution model

BD71 - Distribute customer distribution model

SM59 - Create RFC Destinations

BDM5 - Consistency check (Transaction scenarios)

BD82 - Generate Partner Profiles

BD61 - Activate Change Pointers - Globally

BD50 - Activate Change Pointer for Msg Type

BD52 - Activate change pointer per change.doc object

BD59 - Allocation object type -> IDOC type

BD56 - Maintain IDOC Segment Filters

BD53 - Reduction of Message Types

BD21 - Select Change Pointer

BD87 - Status Monitor for ALE Messages

BDM5 - Consistency check (Transaction scenarios)

BD62 - Define rules

BD79 - Maintain rules

BD55 - Defining settings for IDoc conversion

WEDI - ALE IDoc Administration

WE21 - Ports in Idoc processing

WE60 - IDoc documentation

SARA - IDoc archiving (Object type IDOC)

WE47 - IDoc status maintenance

WE07 - IDoc statistics

BALE - ALE Distribution Administration

WE05 - IDoc overview

BD87 - Inbound IDoc reprocessing

BD88 - Outbound IDoc reprocessing

BDM2 - IDoc Trace

BDM7 - IDoc Audit Analysis

BD21 - Create IDocs from change pointers

SM58 - Schedule RFC Failures

Basic config for Distributed data:

BD64: Maintain a Distributed Model

BD82: Generate Partner Profile

BD64: Distribute the distribution Model

Programs

RBDMIDOC – Creating IDoc Type from Change Pointers

RSEOUT00 – Process all selected IDocs (EDI)

RBDAPP01 - Inbound Processing of IDocs Ready for Transfer

RSARFCEX - Execute Calls Not Yet Executed

RBDMOIND - Status Conversion with Successful tRFC Execution

RBDMANIN - Start error handling for non-posted IDocs

RBDSTATE - Send Audit Confirmations

FOr testing you can use WE19.

BAPI

BAPI Programming guide: -

http://help.sap.com/saphelp_nw04/helpdata/en/e0/9eb2370f9cbe68e10000009b38f8cf/frameset.htm

BAPI user guide: -

http://help.sap.com/saphelp_46c/helpdata/en/7e/5e115e4a1611d1894c0000e829fbbd/frameset.htm

BAPI STEP BY STEP PROCEDURE: -

http://www.sap-img.com/abap/bapi-step-by-step-guidance.htm

Example:-

http://www.erpgenie.com/abap/bapi/example.htm

PDF download: -

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/200dd1cc-589e-2910-98a9-bb2c48b7...

list of all bapis

http://www.planetsap.com/LIST_ALL_BAPIs.htm

for BAPI's

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

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

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

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

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

http://service.sap.com/ale

http://service.sap.com/bapi

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDAPII/CABFAAPIINTRO.pdf

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFABAPIREF/CABFABAPIPG.pdf

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCFESDE8/BCFESDE8.pdf

http://www.planetsap.com/Bapi_main_page.htm

http://www.topxml.com/sap/sap_idoc_xml.asp

http://www.sapdevelopment.co.uk/

http://www.sapdevelopment.co.uk/java/jco/bapi_jco.pdf

Also refer to the following links..

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

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

http://www.planetsap.com/Bapi_main_page.htm

http://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#

BADI

Check these links on BADI

http://www.esnips.com/doc/e06e4171-29df-462f-b857-54fac19a9d8e/ppt-on-badis.ppt

http://www.esnips.com/doc/10016c34-55a7-4b13-8f5f-bf720422d265/BADIs.pdf

http://www.esnips.com/doc/43a58f51-5d92-4213-913a-de05e9faac0d/Business-Addin.doc

http://www.esnips.com/doc/1e10392e-64d8-4181-b2a5-5f04d8f87839/badi.doc

http://www.esnips.com/doc/3b7bbc09-c095-45a0-9e89-91f2f86ee8e9/BADI-Introduction.ppt

Check this link for advantage of BADIs over User exits

http://www.sap-img.com/abap/difference-between-badi-and-user-exits.htm

Reward points if useful.

Regards,

Sushama

[Former Member]

Hi,

There are couple of similar discussions invloved in SDN forum,

Please find here with you the links for it

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

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

RFC means remote function call,

these are the function modules which can help u to access across the sap and from sap to third party front end,

IDOC means intermediate document, which can help u to carry the data from sap to non-sap.

this is two types,

one is ALE,

and second is EDI.

ALE uses to tranfer the data across sap systems

where as EDI uses to transfer the data from sap to third party front end.

BAPI means Business application programing interface which is the RFC enable function module and uses in OOPS concept.

ALE/ IDOC

http://help.sap.com/saphelp_erp2004/helpdata/en/dc/6b835943d711d1893e0000e8323c4f/content.htm

http://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.doc

http://edocs.bea.com/elink/adapter/r3/userhtm/ale.htm#1008419

http://www.netweaverguru.com/EDI/HTML/IDocBook.htm

http://www.sapgenie.com/sapedi/index.htm

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

http://www.sappoint.com/abap/ale2.pdf

http://www.sapgenie.com/sapedi/idoc_abap.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/0b/2a60bb507d11d18ee90000e8366fc2/frameset.htm

http://help.sap.com/saphelp_erp2005/helpdata/en/78/217da751ce11d189570000e829fbbd/frameset.htm

http://www.allsaplinks.com/idoc_sample.html

http://www.sappoint.com/abap.html

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

Thanks

Swarup

[Former Member]

Difference between RFC, IDoC, and BAPI:

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

http://sapabap.iespana.es/sapabap/sap/faq/ale_idocs_bapi.htm

When and Why use Bapi, RFC, Idoc:

http://www.saptechies.com/when-and-why-we-use-bapi-rfc-and-idoc-in-xi/

BR,

Alok