The Selective Data Transition covers the migration of relevant business data from SAP ERP to SAP S/4HANA. It allows a tailored scope between system conversion and new implementation with the flexibility to adapt data and processes in one step. The approach allows to combine redesign of business processes with retaining historical data aligned to a new business reality.
The Selective Data Transition path works with both the new implementation and system conversion transition scenarios. SDT provides a mean of 'selecting' specific data or configuration and 'carving' these elements out of the source system and into the target system. Using the SAP LT (Landscape Transformation) tool, customers can tailor their scope relative to their unique scenarios and move these elements across.
Selective Data Transition allows transfer of data from one or more existing ERP solutions to a new SAP S/4HANA solution. You select which data to transfer which can include:
ABAP repository of objects and developments
Configuration (customizing) data
Master data
Transaction data (open items and a time-slice of historical closed items, for example, 2 years)
There are two common approaches:
Shell Conversion
A shell copy of the production system is made without master and transaction data, and converted to SAP S/4HANA. This option is best if most of the original processes are being reused.
Then by using applying the Selective Data Transition scenario, specific scope can be carved out of the source system and copied to the target system.
Mix and Match
A new SAP S/4HANA install is created and elements of existing configuration and ABAP repository are transferred. This option is best if the majority of the solution is being redesigned.
Shell Conversion versus Mix and Match Landscape
In this diagram, we compare the difference between a Shell Conversion vs Mix and Match, as below:
What is Shell Conversion Approach?
In a shell conversion scenario all data from the SAP ERP system is removed, leaving the system with the configuration and developments only. The system conversion scenario is then used to convert the system to SAP S/4HANA. After the completion of the conversion, the data is then migrated to the newly converted S/4HANA system.
What is Mix and Match Approach?
If the customer would like to redesign most of their business processes but still retain some of their existing enhancements, then a mix and match model would be the most viable approach. The mix and match approach starts with a new implementation scenario, which is then followed by a selective data transition, which selectively chooses the setting required to be retained from the existing SAP ECC system.
SAP LT Enabled Scenarios
Selective Data Transition is enabled through the SAP LT (Landscape Transformation) tool. The following are the key capabilities and scenarios this tool is used for:
Consolidation of multiple system into one
Migration of Business Units
Migration of selected applications
SAP Landscape Transformation Tool
SAP landscape transformation is made up of analysis and transformation tools to use as part of your migration, conversion, or reorganization projects. It works very similarly to a data migration tool which connects to source systems, transforms data, and loads to the target.
SAP Landscape Transformation (LT) enables companies to align their existing SAP system landscape after restructuring their business, updating existing processes, integrating a recently acquired company, or removing parts of the business data due to a divestiture from their existing SAP system landscape. SAP LT ensures full data consistency and data integrity within transformation projects such as data migrations and data conversions.
SLT Tool Capabilities
Here are some of the elements and capabilities.
In addition to the above, SAP LT unifies that data in the target system, so as not to have duplicate entries.
Additional Content
Additional content about Selective Data Transition as well as the SAP Landscape Transformation (SAP LT) tool can be found at help.sap.com.