How To Fix /SAPAPO/OM_UPGRADE408 - Conversion of &1 from source release &2 not implemented

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_UPGRADE -

• Message number: 408

• Message text: Conversion of &1 from source release &2 not implemented

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_UPGRADE408 - Conversion of &1 from source release &2 not implemented ?

  The SAP error message /SAPAPO/OM_UPGRADE408 typically indicates that there is an issue with the conversion of data from one version of SAP APO (Advanced Planning and Optimization) to another. This error often arises during system upgrades or migrations when the system attempts to convert data that is not supported or has not been implemented for the specified source release.
  Cause:
  
  Unsupported Data Conversion: The error usually occurs when the system encounters data or functionality that has not been implemented for the source release specified in the error message.
  Version Compatibility: The source release may contain features or data structures that are incompatible with the target release.
  Custom Developments: If there are custom developments or enhancements in the source system that are not recognized in the target system, this can lead to conversion issues.
  
  Solution:
  
  Check Release Notes: Review the release notes and upgrade documentation for the target version of SAP APO to identify any changes in data structures or functionalities that may affect the conversion.
  Data Cleanup: If possible, clean up or modify the data in the source system before the upgrade to ensure compatibility with the target version.
  Custom Code Review: If there are custom developments, review them to ensure they are compatible with the new version. You may need to adjust or redevelop certain functionalities.
  SAP Notes: Search for relevant SAP Notes that may address this specific error. SAP often provides patches or guidance for known issues during upgrades.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide insights specific to your system configuration and the error encountered.
  
  Related Information:
  
  SAP Upgrade Guide: Always refer to the official SAP upgrade guide for your specific version to understand the prerequisites and steps involved in the upgrade process.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions or workarounds.
  Testing Environment: If possible, perform the upgrade in a testing environment first to identify and resolve any issues before applying changes to the production system.
  
  By following these steps, you should be able to address the /SAPAPO/OM_UPGRADE408 error and successfully complete your upgrade or migration process.