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Author's profile photo Daniel Enderli

S/4 HANA Transformation with Dual Maintenance and Retrofit


With this blogpost I like to give an overview about the topic “S/4 HANA Transformation with Dual Maintenance and Retrofit”. In a future blog post I will describe the topic from a technical perspective.

Starting point for existing SAP customers who want to migrate to S/4 HANA

Most of the customers have an existing SAP ECC landscape in place. Let’s call this landscape “The maintenance track”.

At the same time, a second landscape is being built for S/4 HANA. Let’s call this landscape “The project track”.

During the project period, there are now two landscapes that have to be maintained at the same time. This is a very common use case for most of the SAP customers.

I now would like to use this introduction to explain the retrofit topic.



Dual Maintenance

The following graphic illustrates a dual landscape with the maintenance track and the project track. Every change in the maintenance track needs to be checked whether this is also relevant for the project landscape. This can be done with the support of retrofit (blue arrow).


Dual Maintenance


Possible solutions to keep both maintenance track and project track in sync

  1. Implementation of an organizational, non-system-supported solution
  2. Implementation of dual maintenance workflow and Solution Manager ChaRM with Retrofit
  3. Implementation of dual maintenance workflow with Solution Manager Focused Build and ChaRM with Retrofit


The organizational process

The following graphic illustrates the organizational process for a change which is starting in the maintenance track.


The organizational process

The Solution Manager Retrofit solution

If you choose the system-supported solution, you can decide for each change in the retrofit queue which option you want to perform.

This will give you also the benefit, that no change is forgotten and will be missing in the S/4 HANA project track.


Retrofit queue with explanation


As I mentioned in the introduction, this scenario will be relevant for almost all SAP customers which transform their landscape to S/4 HANA.

I strongly recommend to use the lead time now and think about how you would like to handle the two parallel system landscapes and be well prepared during the S/4 HANA project and also later in operations.

That’s all for the moment for the topic “Dual Maintenance” and “Retrofit”. I will describe the solution from a technical perspective in a later blog post.

Happy retrofitting!


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      Author's profile photo Roland Kramer
      Roland Kramer

      See also my Blog about S/4 2020 -

      besr regards Roland

      Author's profile photo Stephan Heinberg
      Stephan Heinberg

      Dear Daniel,

      happy to read about the details in you next blog.

      The official note contains a lot of disclaimers:



      Author's profile photo Bo Sörensen
      Bo Sörensen

      Thanks for the teaser Daniel.

      I will be following this topic closely.

      BR, Bo

      Author's profile photo Sunny Dhama
      Sunny Dhama

      Thanks Daniel,

      Note 2652106, suggest that "ECC to S/4 HANA retrofit requires SAP involvement (Consulting or Premium Engagement). This note was last updated in july, 2020. Is it still the case? Any information on whether this can be done without SAP consulting and premium support would be helpful.


      Author's profile photo Mahmoud M Younes
      Mahmoud M Younes

      i have raised this concern to SAP and they confirmed ECC to S/4 HANA retrofit requires SAP involvement as still in a pilot phase

      Author's profile photo Jens Schwendemann
      Jens Schwendemann

      Thanks for the update. As I understood, "Pilot Phase" is SAP's way of getting a grip to ECC --> S4H retrofits by means of "adding their special sauce" especially when it comes to customizing (tables / views).

      That being said it is increased costs for customers using retrofit from ECC to S4H when you need to pay SAP for consulting (or having paid upfront with premium engagement)