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Background documentationSolution: Time-Based Reduction for SAP ERP


This migration solution is applicable to the migration of data from an SAP ERP system.

With this migration solution, you can migrate the following types of data:

  • Transactional Data: You are required to specify a data slice date, whereby SAP TDMS migrates all transactional data created on and after this date from the sender system to the receiver system.

    Note Note

    To ensure data consistency in the receiver client for the specified data slice date, SAP TDMS transfers additional transactional data that is business-relevant.

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  • Master Data and Customizing Data: SAP TDMS transfers the complete set of master data and Customizing data regardless of the data slice date you specified.

  • SAP ERP HCM Data: You can additionally choose to migrate SAP ERP HCM data based on the data slice date you specify.


You can carry out data scrambling in the sender system after selecting ERP data and before transferring the data to the receiver system.

SAP TDMS copies the data selected for transfer to a data cluster and scrambles the cluster data before transfer.



This migration solution includes the following phases:

  • Package Settings

    In this phase, you make certain technical settings such as assigning logical system names in the receiver system, excluding user-related data from data transfer, specifying scrambling rules, selecting additional customer-created tables for transfer and so on.

    You decide which tables must be transferred in a reduced form, excluded from transfer, or transferred completely to ensure that the receiver client has an optimal data set.

    You can additionally define the rules for data reduction by specifying selection groups.

  • System Analysis

    You execute background activities that prepare the migration objects for transfer and generate programs for data deletion.

    You confirm your settings so that they become effective for the data transfer.

  • Data Transfer

    In this phase, you execute TDMS header activities to select business process data. You also execute the final checks before data transfer to ensure that no significant changes have taken place in the repository of the sender system while your SAP TDMS project is running.

    SAP TDMS deletes the existing data from the receiver client and starts the data transfer. You can lock the users in the receiver system so that no changes take place during data deletion and data transfer.

  • Post-Transfer Processing

    In this phase, SAP TDMS makes a few post-transfer settings in the receiver system such as adjustment of number ranges and adjustment of Business Workplace tables.

    If you had set a lock on users in the receiver system during data deletion, you can unlock the users now.

    You can additionally clear the temporary tables filled during the data migration in all participating systems.

Note Note

You can transfer data using RFC connections or data files. If you choose to transfer data through data files, export the file to the transport directory or any other path, and execute the Data Import Through Files for SAP ERP migration solution. Executing the migration solution imports the data files to the receiver system.

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