How To Fix TN816 - System is not running in "B4H" mode (BW/4HANA conversion is not possible)

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 816

• Message text: System is not running in "B4H" mode (BW/4HANA conversion is not possible)

What causes this issue?

You have selected the software component &V1& for installation and hence
you want to start a BW/4HANA conversion. The system prerequisite check
detected, however, that the system is not running in strict B4H mode.
This means that a BW/4HANA conversion is not possible at present.

System Response

The installation of software component &V1& is not started.

How to fix this error?

Meet the prerequisites for running your system in B6H mode and enable
this mode. Note &V2& contains further information about how to proceed
here.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TN816 - System is not running in "B4H" mode (BW/4HANA conversion is not possible) ?

  The SAP error message TN816 indicates that the system is not running in "B4H" mode, which is necessary for performing a BW/4HANA conversion. This error typically arises when you are attempting to convert an existing SAP BW system to BW/4HANA, but the system is not configured correctly to support this conversion.
  Cause:
  
  Incorrect System Mode: The system is not set to "B4H" mode, which is required for BW/4HANA. This mode indicates that the system is prepared for BW/4HANA functionalities and optimizations.
  Version Compatibility: The current version of the SAP BW system may not be compatible with BW/4HANA, or it may not have been properly upgraded to a version that supports the conversion.
  Missing Configuration: Certain configurations or prerequisites may not have been completed, preventing the system from entering "B4H" mode.
  
  Solution:
  
  Check System Version: Ensure that your SAP BW system is on a version that is compatible with BW/4HANA. You may need to upgrade your system to a supported version.
  Activate B4H Mode: You can activate "B4H" mode by using the transaction code RSCUSTV10 and setting the appropriate parameters. This may involve executing specific configuration steps or using the BW/4HANA Migration Cockpit.
  Follow Migration Guide: Refer to the official SAP BW/4HANA Migration Guide for detailed steps on how to prepare your system for conversion. This guide will provide insights into the necessary configurations and prerequisites.
  Run Pre-Checks: Use the BW/4HANA Migration Check Tool to identify any issues that need to be resolved before conversion. This tool can help you ensure that your system is ready for the migration.
  Consult SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error message.
  
  Related Information:
  
  SAP BW/4HANA Documentation: Review the official SAP documentation for BW/4HANA, which includes detailed information on system requirements, conversion steps, and best practices.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you have a support contract.
  
  By following these steps, you should be able to resolve the TN816 error and successfully prepare your system for BW/4HANA conversion.