data migration from SAP ECC to SAP S/4HANA onpremise

[Somraj]

Dear All,

We need to create data migration strategy for ECC -> S/4HANA (on-premise) transition . Does SAP recommends DMC or RDS ? Also what tools are available for extract and transform ?

Secondly, can you kindly share a blog for this migration which says SAP recommended tools & scenarios. I don’t need much of you time. Kindly share a blog with SAP recommendations which could be my starting point and rest I will create.

[Sybille]

Hi Somraj,

for data migration ECC - SAP S/4HANA, we recommend using the SAP S/4HANA Migration Cockpit - approach "migrate data directly from SAP System". Here you connect to ECC and extract data directly via RFC, migration objects are predefined.

Please find

• overview slide deck on SAP S/4HANA migration cockpit
• detailed information on help.sap.com - migrate data directly from SAP System

Regards,

Sybille Lackermeier SAP S/4HANA Migration Cockpit Product Management

[Somraj]

Dear sybille.lackermeier : Thank you for your answer. I need some additional details. Can you kindly point me towards some details about Rapid Data Migration with SAP Data Services (RDM). When shall we use RDM ? Is it still recommended by SAP ?

Also, there were few more tools as below. Are these relevant anymore or deprecated ?

1) SAP Information Steward (IS)

2) SAP HANA Virtual Data Models (VDM)

3) SAP SLT (for extraction)

4) HVR Data Replication (HVR)

[vinita_kasliwal]

Hi Somraj

Note that steps for migration would be dependent on the version you have

There are notes which you could refer as below

2475034 - Migration Cockpit & SLT on S/4 HANA On-Premise Edition 1709

2890888 - Migration Cockpit & SLT on S/4 HANA On-Premise Edition 2020

2848224 - Migration Cockpit: Collective KBA for Business Partner (Customer, Supplier)

2537549 - Collective SAP Note and FAQ for SAP S/4HANA Migration cockpit - File/Staging (on premise / S4CORE)

Data Migration is managed with three Transactions: LTMOM : Migration Object Modeler LTMC : Migration Cockpit MWB : Migration Workbench

Here is a blog I had written in the past pl have a look and see if this helps

https://blogs.sap.com/2019/02/21/sap-s4-hana-cvi-conversion-lessons-learnt/

others as below:

https://blogs.sap.com/2019/10/14/data-migration-cockpit-dmc/

https://blogs.sap.com/2019/10/17/s4-hana-data-migration-cockpit-on-premise/

https://blogs.sap.com/2017/05/29/migrating-data-to-your-new-sap-s4hana/

Hope that helps!

Regards

Vinita

[Somraj]

peritos_solutions : Thank you for the details. It was really helpful.

One doubt – in data migration (ECC -> S4H) for extract and transform which tools does SAP recommend ?

[TuncayKaraca]

Hello Somraj,

Here you can start:

• SAP S/4HANA Migration Cockpit Frequently Asked Questions (FAQs)
• SAP S/4HANA Data Migration

From SAP ECC to SAP S/4HANA; basically Data Migration Cockpit LTMC will be used load to S/4 with pre-defined data migration objects/templates. The key point here how/which data will be extracted/transferred from ECC and how will be converted/migrated to S/4 LTMC objects/templates.

Options:

• Developing ABAP programs
• Using SAP Data Services (BODS)

As medium options are (1) Using Files (2) HANA staging tables and (3) directly from SAP system.

Regards,
Tuncay

[Somraj]

Hello tuncay.karaca : When we use SUM/DMO for a conversion project then it does some data migration isnt it ? What is the delta that we should target to achieve ? Kindly can you suggest.

[TuncayKaraca]

Hi Somraj,

What is SUM/DMO? Do you mean Database Migration Option (DOM) of Software Update Manager (SUM) ?

Tuncay

[Somraj]

Hello tuncay.karaca : yes SUM/DMO is software update manager and Database Migration Option. My understanding is below. Can you kindly confirm.

• 1)DMC is applicable for greenfield only. We can have ECC as source (legacy) but the implementation should be greenfield (i.e. no transition by SUM/DMO).

• 2)For ECC -> S/4HANA conversion (i.e. SUM/DMO) the tools do the conversion and data migration. No need of DMC. We need to do pre-projects (e.g. CVI) and some post conversion tasks.

[TuncayKaraca]

Hello Somraj,

1. For New Implementation / Greenfield scenario - DMC can be used to migrate and convert data from the source SAP ECC to S/4HANA. Non-SAP systems' data also can be migrated and converted.
2. For System Conversion / Brownfield scenario - existing SAP ECC is converted to S/4HANA; it's more like release upgrade. Yes, SUM/DMO tools do the conversion. DMO is needed only if SAP ECC has a anydb (non-SAP database). One of the advantages of System Conversion / Brownfield is existing business processes, customizing, transactional data and custom code is maintained.

Tuncay

[Somraj]

Dear tuncay.karaca : I got all the answers for migration cockpit. Can you please give me some leads about RDS i.e. Using SAP Data Services (BODS).

[TuncayKaraca]

Hi Somraj,

RDS (Rapid Deployment Solutions) for Data Migration that can be called RDM (Rapid Data Migration) which is basically a packaged solution that includes pre-configured content, best practices, etc. The core content of RDM is for SAP Data Services (BODS) which is as an ETL (Extract Transform Load) tool for ECC - S/4 Migration.

Using SAP Data Services (BODS) is a good option for Data Migration process; SAP Data Services is a proven tool for connect to systems, extract data, transform data, and load data to the target systems. You don't need RDM's packaged solutions; you can scope, design and develop all data migrations with SAP Data Services; though RDM's predeveloped objects can contribute in a way that helps exploring, validation for what needs to be done! Carefully you need to explore what RDM has been providing.

Here check: Rapid data migration to SAP S/4HANA‎

Tuncay