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Link Between ECC system and S/4 Hana

Dear Expert,

I am writing this question to understand more about how the old data from the ECC system can be viewed in the S/4 Hana system if we are going for new implementation.

For example we would like to have 3 years old sales statics from ECC system to be viewed in the new S/4 Hana system, but we are not performing the system conversion here.

Thanks & Regards,


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  • Best Answer
    Posted on Aug 20, 2018 at 03:44 PM

    Hi Sudharsanan,

    As Marssel Vilaça recommends, if you want to see your history in the S/4HANA, you will have to migrate it.

    There are 2 other options:

    - keep the old system in display mode, as an archive

    - copy the ECC data into a data warehouse like BW, BW on HANA or BW/4HANA
    and merge the datasets from ECC and S/4HANA

    Hope this helps.

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  • Posted on Aug 20, 2018 at 03:04 PM

    Hi Sudharsanan,

    Your legacy database can be active but it won't be available in S/4HANA greenfield conversion. The Data Migration is requested in this case. You may check the posibility to access this information directly from the legacy database. This isn't a quick discussion. Please check also the following discussion about this topic:


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