Wednesday, 20 September 2017

ALE , IDOC part1Concepts : Tutorials WE02 and BD87- Staus monitor for ALE messages(INBOUND) and BD88(outbound) - Part1

What is ALE ?
ALE stands for Application Link Enabling. As it's name indicates , it links two systems.
ALE is a technology that can enable exchange of data between two different Systems ( Sap - Sap OR Sap - Non Sap). ALE technology enables distributed yet integrated installation of SAP systems.
ALE architecture comprises of 3 layers : 

Application layer refers to the application data ( SD , MM , FI or data for any SAP application ) . In this layer the data is collected to be distributed and then sent to the distribution layer.

Distribution layer determines to whom should the data generated by the application layer has to be distributed i.e. it is in the distribution layer that the recipient is determined , the data is formatted or filtered and then an actual is created.

Communication layer takes the responsibility of delivering the Idoc to the receiving system and communicates to the receiving system via tRFC , File ports , FTP or TCP/IP etc.



ALE uses IDoc as a vehicle to transfer data between two systems.



1.To display Runned Idoc List:

WE02 is used to check the inbound and outbound IDOCs.




2. To display Status Monitor for ALE messages:





Where all the Idocs get stored after creation?

EDIDC stores control/header record.
EDIDD/EDID4 stores data records.
EDIDS stores status records. 


What are the types of records in SAP ALE Idocs and where is this information stored ?
There are three types of records in SAP ALE Idocs:
Control Records: Control record information for an IDoc is stored in standard table EDIDC.
Data Records:     Control record information for an IDoc is stored in standard table EDIDD.
Status Records:   Control record information for an IDoc is stored in standard table EDIDS.

But here are a few that you should know:
0-49 indicates an Outbound IDoc and 50-75 as Inbound IDoc. 

01  IDoc generated
02  Error passing data to port
03  Data passed to port OK

51  Application document not posted
52  Application document not fully posted
53  Application document posted

IDoc+Statuses Messages



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