lsmw by idoc
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Step-By-Step Guide for LSMW using ALE/IDOC Method
By Sarang Kahu
Business Case:
In Business scenario, it is required to upload the data into R/3 and process the data in
the IDOC form only. The data can be migrated to R/3 SAP system using IDOCGeneration Method in LSMW. The data to be uploaded can be regarding material,
vendor, customer etc. IDOC is the container, which stores the data in structured
format and is used to communicate between R/3 systems. IDOC structure includes
Status Record for storing status information of IDOC dispatch, Data Record for
storing data into segments and its corresponding fields and Control Record has
receiver and source system details etc.
This document contains Step-by-Step instructions to use LSMW to generate and
process IDOC from the data file available. In first part user-defined IDOC structure is
created and required ALE settings are done .In the Second part, this IDOC structure isused in the LSMW IDOC.
Part One: To create IDOC structure
Step One: Run transaction WE31.Create Segment with name ‘ZEMP_SEG’.
Step Two: Input the fields for the segment structure, which would be required in
LSMW for mapping purpose.
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Step Three: Now, Go to Edit -> Set Release, so that you can use this segment in the
R/3 system further.
Step Four: Run transaction ‘we30’ and enter IDOC structure name we want to create.
Here, IDOC structure name is ‘ZEMP_IDC’.
Step Five:
(A) Add segment created earlier to this IDOC type ‘ZEMP_IDC’.
The maximum and minimum repetitions can be from 000000000000 to 99999999999.
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Choose any number rang as per requirement.
Now, Go back to earlier page and Click Edit-> Set Release.
(B)Create new Message type in transaction ‘WE81’.
(C) Attach message type and IDOC type with the help of transaction ‘WE82’.
Step Six: Go to transaction ‘SALE’. Click as marked in red color.
Now add two logical system names for sender and receiver ex. IDC64 and IDC87.
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Step Seven: Now assign clients to the logical systems created.
Select the client of your current system as per decision to make that system sender or
receiver.
After clicking on to Goto->Details , you come to following screen. Input receiver
system ‘IDC87’ to client 800.
Here in our LSMW using IDOC method, no need to assign client to sender as we are
doing Inbound IDOC Processing (i.e. Receiver side).
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Step Eight: Run transaction ‘WE21’ to create File port. Give directory name as the
location of your file to be read. Give dummy name for ‘Outbound file’ field.
Step Nine: Run ‘SM59’ transaction to create RFC connection. Please make sure here
connection type is ‘T’ for TCP/IP .
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Step Ten: Run transaction ‘WE20’ to create partner profile for partner of receiver
system (IDC87) i.e. sender system (IDC64).
Step Eleven: Create process code using ‘WE42’.
After saving this data, you go screen as below to attach function module to the
process code. The process code is the representation of the function module for
inbound idoc processing.
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Step Twelve: Now you can use this process code in the inbound parameters of the
partner’s profile.
Part Two:
Following are the steps to be performed on LSMW side.
Step One:
Enter the project, sub-project and Object name for our scenario.
Step Two:
Click the first radio button ‘Maintain Object Attributes’ , execute and enter themessage name and IDOC name into the screen as follows.
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Step Three:
Click radio button ‘Maintain Source Structures’ and execute to create new source
structure as follows.
Step Four:
Click radio button ‘Maintain Source Fields’ and execute to enter the fields in the
source structure. Here these fields are same as the fields in segment of the IDOC
created earlier.
Step Five:
Click radio button ‘Maintain Structure Relations’ and execute to create relationship
between source and target structure. Here target structure is Message type‘ZEMP_MSG’.
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And now we specify the location of file here.
Step Nine:
Click radio button ‘Specify Files’ and execute to specify file to source structure as
follows.
Step Ten:
Click radio button ‘Read Data’ and execute to read file from local workstation as per path specified.
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Step Eleven:
Click radio button ‘Display Read Data’ and execute to display data just read.
Step Twelve:
Click radio button ‘Convert Data’ and execute to create a file with extension ‘.conv ’.
Step Thirteen:
Click radio button ‘Display Converted Data’ and execute to display the converted
data.
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Step Fourteen:
Click radio button ‘Start IDoc Generation’ and execute to generate the IDOC from
the data provided and structure mapping done earlier in this document. For this
purpose, we cam use the converted file in step twelve. After successful generation of
IDOC, below shown message is displayed.
Step Fifteen:
Click radio button ‘Start IDoc Processing’ and execute to process the IDOC by
inputting necessary selection parameters.
Step Sixteen:
Click radio button ‘Create IDoc Overview’ and execute to show status and details of
IDOC generated. This screen is similar to ‘WE02’ or ‘WE05’ transaction.
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Here , as you can see , the status of IDOC is OK (Green color Bubble) and hence
confirms successful processing of IDOC.
Step Seventeen:
Click radio button ‘Start IDoc Follow-Up’ and execute to reprocess the IDOC if not
posted or generated properly initially.
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