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    5 Steps To Prepare Your Brownfield Migration To SAP S4HANA

    Uploaded by

    Jay Banda

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    © All Rights Reserved
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    5 Steps To Prepare Your Brownfield Migration To SAP S4HANA

    Uploaded by

    Jay Banda
    178 views4 pages

    Original Title

    5 steps to prepare your brownfield migration to SAP S4HANA

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    178 views4 pages

    5 Steps To Prepare Your Brownfield Migration To SAP S4HANA

    Uploaded by

    Jay Banda

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    Contents

    Our step-by-step guide to your SAP S/4HANA brownfield migration....................................................................................1


    5 steps to prepare your brownfield migration to SAP S/4HANA.......................................................................................2
    Project Planning for your own Brownfield Migration....................................................................................................2
    Review the System Requirements....................................................................................................................2
    Maintenance Planner (MP)...................................................................................................................................2
    Simplification Item Check....................................................................................................................................2
    Migration of the Custom Code...........................................................................................................................3
    How to start your technical brownfield conversion to SAP S/4HANA......................................................3
    Software Update Manager (SUM).................................................................................................................................3
    Next Technical Steps of your Brownfield Migration......................................................................................................3

    Our step-by-step guide to your SAP S/4HANA brownfield migration


    You plan to implement an SAP S/4HANA system and you have already decided that a greenfield
    migration approach (start from scratch) is not the right choice for you. So you are wondering which
    steps you need to take to complete the conversion from your current SAP ECC system landscape to
    SAP S/4HANA (brownfield migration approach). This blog article guides you through the different
    steps that you need to complete during your SAP S/4HANA brownfield conversion.

    The image below outlines the stages of an SAP S/4HANA conversion:

    7 steps to prepare and execute your SAP S/4HANA Brownfield Migration

    The conversion is divided into two phases: the preparation and the technical conversion phase. We
    will discuss each of the different steps per phase in more detail in the following paragraphs.

    5 steps to prepare your brownfield migration to SAP S/4HANA


    During the preparation phase, your current SAP ECC system will be enabled to carry out
    the migration to S/4HANA.

    Project Planning for your own Brownfield Migration

    But before the technical activities of a conversion project can begin, we recommend
    starting with a planning phase in order to specify the parameters (e.g. scope,
    schedule, budget, project organisation) and to make sure that the entire project team is
    on the same page in regard to the technical aspects and the procedure.

    Afterwards, the steps to complete a brownfield project can commence.

    Review the System Requirements

    The first step is to review the system requirements:

     Is your system unicode-enabled?


     Is a Dual Stack Split required?
     Is a database update required?

    Maintenance Planner (MP)

    Subsequently, the MP, a tool provided by SAP, will check whether the installed
    components, add-ons, and business functions are compatible with S/4HANA. It also
    generates the download files that the Software Update Manager (SUM) will require for
    the migration at a later point.

    If all checks were successful, the conversion to SAP S/4HANA will be permitted. If the
    MP does not locate a valid migration path (e.g. because an add-on is not certified for
    S/4HANA), the tool will prevent the migration from going ahead.

    Simplification Item Check

    The subsequent simplification item check identifies important steps that must be
    completed in order to allow the technical migration of the system and to ensure that
    business processes will continue to run after the SAP S/4HANA migration is complete.
    This includes certain plausibility checks (such as in asset accounting) that identify
    inconsistencies within the SAP system. A detailed log provides information on errors and
    possible solutions.
    OUR TIP: We recommend running the simplification item check as early as possible in the project as
    the results will have an impact on the estimated effort and project scope. Also, errors should be
    removed as soon as possible.

    Migration of the Custom Code

    The migration of the custom code includes the analysis of developments (Z


    programs, enhancements, and modifications) and provides information on where the
    code is not compatible with the new data structures. At this point, it is recommended
    to prepare, as early as possible, a priority list of which adjustments are
    either necessary or optional.

    Many of our customers work with custom developments that are no longer used. If this
    is the case, we recommend running an extensive analysis of the system using the ABAP
    Call Monitor (SCMON) and deleting obsolete coding or programs that are no longer in
    use.

    Furthermore, there are a number of cross-module tasks, such as the adjustment of


    authorizations for using FIORI, and module-specific tasks. For example, for the logistics
    processes within SAP, the customer master data and supplier master data need to be
    converted into Business Partners before the conversion takes place.

    How to start your technical brownfield conversion to


    SAP S/4HANA

    Software Update Manager (SUM)

    Once you have completed all steps of the preparation phase, the data can be migrated
    using the SUM. If you do not already have a HANA database, implementing this will be
    the first step of the brownfield conversion phase. The new tools, applications and data
    structures will be installed afterwards. The last step is the actual migration, which
    converts the master data and transaction data into the new data model.

    Once the migration was successful, the validation of the system will start, which will
    ultimately lead to your Go/No-Go decision for the Go-Live.

    Next Technical Steps of your Brownfield Migration


    Some subsequent post-processing steps will be necessary. The new data
    structure requires you to align your coding, and some customizing of settings
    in Logistics and Accounting will be necessary.
    Some of the steps mentioned before will have to be carried out multiple times over the
    duration of the project, depending on your scheduled number of test migrations.

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