Answer Posted / babu
It depends on business case:
Case 1: A customer wants a order acknowledgment for his
order, another wants a invoice in EDI formats. In this case
you will enable IDoc output through output determination in
VA01 and VF01 transactions, you will assign ORDERS, INVOIC
message types. The triggering function module would be
EDI_PROCESSING
Case 2: A business wants to distribute its material data
from its main ERP system where all materials are maintained
to non SAP warehouse management systems, price cataloging
systems, all of which require some part of material master.
For this you will enable ALE, create distribution model with
the other systems as receivers, generate partner profiles
and activate change pointers, which will trigger MATMAS idoc
type whenever important fields on material master are
changed via MM* trxns. Here internally you are using
MASTER_IDOC_DISTRIBUTE or externally BD10 transaction.
Case 3: You are getting EDI messages from your business
partners like payment advices, orders etc. You would need to
create IDocs and post the documents to respective
transactions like VA01 etc. You are getting the EDI message
in a file and map it to ORDERS idoc file on OS. Now you can
use EDI_INCOMING data, and if all other configurations like
partner profile, inbound process code, message and idoc
types are setup, you will be able to post the payment advice
or create a sales order
Case 4: You have to post a transaction internally within the
system, then you will use IDOC_INBOUND_ASYNCHRONOUS or
SYNCHRONOUS.
Case 5: You want to directly trigger SAP from an external
system, posting an inbound IDoc, you would need to call
IDOC_INBOUND_ASYNCHRONOUS via tRFC connection and ALE
So it all depends on what the business requirement is.
Case 3.
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