Hi
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.
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.
An SD consultant monitors these incoming and outgoing IDOCS in transactions WE02, WE05 and WEDI.
If any error occurs in IDOCS, it is again reprocessed in transaction BD87.
Regards
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