What is the need of ALE/ IDOC

Question

Hi All,
What is the need of ALE/ IDoc and why we go for ALE?IDOC with conditions
Let me know the answers if anyone have the solution
Regards'
Ramesh

Answer 1

ALE (Application Linking and Enabling)
Ale Technology is SAP’s technology to support distributed yet integrated processes across several SAP systems.
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.
IDocs
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..
Re: How to create IDOC
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
Check 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://www.sapgenie.com/sapgenie/docs/ale_scenario_development_procedure.docs
Please check this PDF documents for ALE and IDoc.
http://www.sappoint.com/abap/ale.pdf
http://www.sappoint.com/abap/ale2.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDALEIO/BCMIDALEIO.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDALEPRO/BCMIDALEPRO.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFAALEQS/CABFAALEQS.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCSRVEDISC/CAEDISCAP_STC.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCSRVEDI/CAEDI.pdf
Check below link. It will give the step by step procedure for IDOC creation.
http://www.supinfo-projects.com/cn/2005/idocs_en/2/
Regards,