How SAP ECC to S/4HANA Migration Affects SAP BW 7.5 System

How SAP ECC to S/4HANA Migration Affects SAP BW 7.5 System

How SAP ECC to S/4HANA Migration Affects SAP BW 7.5 System

SAP ECC is the legacy ERP solution that has been widely used by many organizations for their business processes and analytics. SAP S/4HANA is the next-generation ERP solution that can leverage the power of SAP HANA to provide fast and flexible business processes and analytics. But how does SAP ECC to S/4HANA migration affect SAP BW 7.5 system, the data warehouse solution that is integrated with SAP ECC?

In this blog post, we will explain what SAP ECC to S/4HANA migration is, how it impacts SAP BW 7.5 system, and what steps you need to take to prepare your SAP BW 7.5 system for the migration. We will also share some tips and best practices for optimizing your SAP BW 7.5 system after the migration.

What is SAP ECC to S/4HANA Migration?

SAP ECC to S/4HANA migration is the process of converting your existing SAP ECC system running on any database to SAP S/4HANA system running on SAP HANA database, preserving your existing configuration, customizations, and historical data. This process allows you to take advantage of the new features and capabilities of SAP S/4HANA, such as simplified data model, intelligent processes, modern user interface, and flexible deployment options.

There are different methods and tools available for SAP ECC to S/4HANA migration, such as:

  • System Conversion: This method converts your existing SAP ECC system in-place to SAP S/4HANA system, without changing the system ID or number of systems. This method is suitable for customers who want to keep their existing system landscape and minimize the downtime and disruption.
  • New Implementation: This method installs a new SAP S/4HANA system and migrates your data from your existing SAP ECC system using data migration tools, such as SAP Data Services or SAP S/4HANA Migration Cockpit. This method is suitable for customers who want to start fresh with a new system landscape and optimize their business processes and data quality.
  • Landscape Transformation: This method consolidates or splits your existing SAP ECC systems into one or more SAP S/4HANA systems using data transformation tools, such as SAP Landscape Transformation Replication Server or SAP Central Finance. This method is suitable for customers who want to restructure their system landscape and harmonize their master data and business processes.

You can find more information about the different methods and tools for SAP ECC to S/4HANA migration in this blog post.

How Does SAP ECC to S/4HANA Migration Impact SAP BW 7.5 System?

SAP BW 7.5 system is the data warehouse solution that is integrated with SAP ECC system for data extraction, transformation, loading, modeling, reporting, and analysis. When you migrate your SAP ECC system to SAP S/4HANA system, your SAP BW 7.5 system will be affected in several ways, such as:

  • Data Sources and Extractors: With SAP ECC to S/4HANA migration, some of the SAP BW business content for ECC are changed or replaced due to the changes in the data sources and extractors in S/4HANA. For example, some of the SAP BW business content for FI, CO, MM, SD, or PP are no longer available or supported in S/4HANA. Instead, new SAP BW business content for S/4HANA are introduced. You need to check the availability and compatibility of your data sources and extractors before and after the migration.
  • Data Models and Objects: With SAP ECC to S/4HANA migration, some of the data models and objects in your SAP BW 7.5 system may need to be adjusted or replaced due to the changes in the data structures and semantics in S/4HANA. For example, some of the InfoObjects, InfoCubes, DSOs, or CompositeProviders may need to be modified or migrated to match the new data model in S/4HANA. You need to check the impact and validity of your data models and objects before and after the migration.
  • Data Quality and Consistency: With SAP ECC to S/4HANA migration, some of the data quality and consistency issues may arise due to the changes in the data logic and rules in S/4HANA. For example, some of the key figures, attributes, hierarchies, or units may have different values or meanings in S/4HANA than in ECC. You need to check the accuracy and completeness of your data before and after the migration.
  • Data Extraction Performance: With SAP ECC to S/4HANA migration, some of the data extraction performance issues may occur due to the changes in the data volume and complexity in S/4HANA. For example, some of the data extraction methods, such as full load, delta load, real-time load, or scheduled load may have different performance characteristics in S/4HANA than in ECC. You need to check the efficiency and scalability of your data extraction processes before and after the migration.

What Steps Do You Need to Take to Prepare Your SAP BW 7.5 System for SAP ECC to S/4HANA Migration?

To prepare your SAP BW 7.5 system for SAP ECC to S/4HANA migration, you need to take the following steps:

  • Analyze Your Current SAP BW 7.5 System: You need to analyze your current SAP BW 7.5 system and identify the data sources, extractors, data models, objects, reports, and processes that are integrated with your SAP ECC system. You also need to assess the data quality, consistency, and performance of your SAP BW 7.5 system and identify any issues or gaps that need to be resolved.
  • Plan Your SAP BW 7.5 System Migration Strategy: You need to plan your SAP BW 7.5 system migration strategy and decide which method and tool you will use for SAP ECC to S/4HANA migration. You also need to decide which data sources, extractors, data models, objects, reports, and processes you will keep, change, or replace in your SAP BW 7.5 system after the migration. You also need to estimate the time, effort, and resources required for the migration.
  • Test Your SAP BW 7.5 System Migration Scenario: You need to test your SAP BW 7.5 system migration scenario and verify that your data sources, extractors, data models, objects, reports, and processes are working as expected in your SAP S/4HANA system. You also need to validate that your data quality, consistency, and performance are maintained or improved in your SAP S/4HANA system.
  • Execute Your SAP BW 7.5 System Migration Project: You need to execute your SAP BW 7.5 system migration project and perform the necessary steps and tasks for the migration. You also need to monitor and control the migration progress and status and resolve any issues or risks that may arise during the migration.
  • Go Live with Your SAP BW 7.5 System on SAP S/4HANA: You need to go live with your SAP BW 7.5 system on SAP S/4HANA and ensure that your data sources, extractors, data models, objects, reports, and processes are operational and functional in your SAP S/4HANA system. You also need to ensure that your data quality, consistency, and performance are optimal in your SAP S/4HANA system.

Tips and Best Practices for Optimizing Your SAP BW 7.5 System After SAP ECC to S/4HANA Migration

Here are some tips and best practices for optimizing your SAP BW 7.5 system after SAP ECC to S/4HANA migration:

  • Leverage the New Features and Capabilities of SAP S/4HANA: After migrating your SAP ECC system to SAP S/4HANA system, you can leverage the new features and capabilities of SAP S/4HANA in your SAP BW 7.5 system. For example, you can use the simplified data model, intelligent processes, modern user interface, and flexible deployment options of SAP S/4HANA in your SAP BW 7.5 system.
  • Use CDS (Core Data Services) Extractors for Data Extraction: After migrating your SAP ECC system to SAP S/4HANA system, you can use CDS (Core Data Services) extractors for data extraction from your SAP S/4HANA system to your SAP BW 7.5 system. CDS extractors are a type of DataSources that enable data extraction from SAP S/4HANA using CDS views and annotations. CDS extractors have several benefits, such as supporting various types of data and scenarios, being based on the same data models as in SAP S/4HANA, and being easy to create and maintain using Eclipse IDE or ABAP Development Tools (ADT).
  • Optimize Your Data Models and Objects for SAP HANA: After migrating your SAP ECC system to SAP S/4HANA system running on SAP HANA database, you can optimize your data models and objects in your SAP BW 7.5 system for SAP HANA. For example, you can use advanced modeling features such as Open ODS Views or CompositeProviders in your SAP BW 7.5 system on HANA. You can also use HANA-specific features such as calculation views or stored procedures in your SAP BW 7.5 system on HANA.
  • Enhance Your Data Quality and Consistency with Data Governance: After migrating your SAP ECC system to SAP S/4HANA system running on HANA database with simplified data model and intelligent processes, you can enhance your data quality and consistency with data governance in your SAP BW 7.5 system. For example, you can use data quality tools such as SAP Information Steward or SAP Data Services in your SAP BW 7.5 system to monitor, measure, and improve your data quality. You can also use data governance tools such as SAP Master Data Governance or SAP Data Intelligence in your SAP BW 7.5 system to define, manage, and harmonize your master data and metadata.

Conclusion

SAP ECC to S/4HANA migration is the process of converting your existing SAP ECC system running on any database to SAP S/4HANA system running on SAP HANA database, preserving your existing configuration, customizations, and historical data. This process affects your SAP BW 7.5 system in several ways, such as data sources and extractors, data models and objects, data quality and consistency, and data extraction performance.

To prepare your SAP BW 7.5 system for SAP ECC to S/4HANA migration, you need to take the following steps: analyze your current SAP BW 7.5 system, plan your SAP BW 7.5 system migration strategy, test your SAP BW 7.5 system migration scenario, execute your SAP BW 7.5 system migration project, and go live with your SAP BW 7.5 system on SAP S/4HANA.

To optimize your SAP BW 7.5 system after SAP ECC to S/4HANA migration, you need to follow these tips and best practices: leverage the new features and capabilities of SAP S/4HANA, use CDS extractors for data extraction, optimize your data models and objects for SAP HANA, and enhance your data quality and consistency with data governance.

We hope this blog post has helped you understand how SAP ECC to S/4HANA migration affects SAP BW 7.5 system and what steps you need to take to prepare and optimize your SAP BW 7.5 system for the migration. If you have any questions or feedback, please feel free to leave a comment below.

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