Lsmw Idoc Method

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  • 7/26/2019 Lsmw Idoc Method


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    Step-By-Step Guide for LSMW using ALE/IDOC MethodContributed 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 IDOC GenerationMethod 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 tocommunicate between R/3 systems. IDOC structure includes Status Record for storingstatus information of IDOC dispatch,Data Record for storing data into segments and itscorresponding 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 iscreated and required ALE settings are done .In the Second part, this IDOC structure is used

    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 LSMWfor mapping purpose.

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    Step Three: Now, Go to Edit -> Set Release, so that you can use this segment in the R/3system further.

    Step Four:Run transaction we30 and enter IDOC structure name we want to create.

    Here, IDOC structure name is ZEMP_IDC.

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    Step Five:(A)Add segment created earlier to this IDOC type ZEMP_IDC.

    The maximum and minimum repetitions can be from 000000000000 to 99999999999.

    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.

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    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.

    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


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    After clicking on to Goto->Details , you come to following screen. Input receiver systemIDC87 to client 800.

    Here in our LSMW using IDOC method, no need to assign client to sender as we are doingInbound IDOC Processing (i.e. Receiver side).

    Step Eight: Run transaction WE21 to create File port. Give directory name as thelocation of your file to be read. Give dummy name for Outbound filefield.

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    Step Nine: Run SM59 transaction to create RFC connection. Please make sure hereconnection type is T for TCP/IP


    Step Ten: Run transaction WE20 to create partner profile for partner of receiver system(IDC87) i.e. sender system (IDC64).

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    Step Eleven: Create process code using WE42.

    After saving this data, you go screen as below to attach function module to the processcode. The process code is the representation of the function module for inbound idoc


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    Step Twelve:Now you can use this process code in the inbound parameters of thepartners 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.

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    Step Two:

    Click the first radio buttonMaintain Object Attributes , execute and enter the messagename and IDOC name into the screen as follows.

    Step Three:

    Click radio button Maintain Source Structures and execute to create new source structureas follows.

    Step Four:Click radio button Maintain Source Fields and execute to enter the fields in the sourcestructure. Here these fields are same as the fields in segment of the IDOC created earlier.

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    Step Five:Click radio button Maintain Structure Relations and execute to create relationshipbetween source and target structure. Here target structure is Message type ZEMP_MSG.

    Step Six:Click radio button Maintain Field Mapping and Conversion Rules and execute to createfield mapping and a conversion rules between source structure and target structure.

    Step Seven:

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    Click radio button Maintain Fixed Values, Translations, User-Defined Routinesandexecute to assign fixed values to any field, to call user defined routines etc. These activitiesare not required in our scenario.

    Step Eight:Click radio button Specify Filesand execute to assign file on the local workstation to theLSMW to read. The file has contents as shown below.

    And now we specify the location of file here.

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    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 pathspecified.

    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 .

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    Step Thirteen:Click radio button Display Converted Data and execute to display the converted data.

    Step Fourteen:Click radio button Start IDoc Generation and execute to generate the IDOC from the dataprovided and structure mapping done earlier in this document. For this purpose, we camuse 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 inputtingnecessary selection parameters.

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    Step Sixteen:Click radio button Create IDoc Overview and execute to show status and details of IDOCgenerated. This screen is similar to WE02 or WE05 transaction.

    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 postedor generated properly initially.

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