How To Fix CNV_MBT155 - No upgrade modifications found

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 155

• Message text: No upgrade modifications found

What causes this issue?

No upgrade modifications found

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

The upgrade functionality was called without any modification data.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT155 - No upgrade modifications found ?

  The SAP error message CNV_MBT155: No upgrade modifications found typically occurs during the upgrade process of an SAP system, particularly when using the SAP Software Update Manager (SUM) or during a system conversion. This error indicates that the system is unable to find any modifications that need to be applied during the upgrade process.
  Causes:
  
  Missing or Incomplete Modifications: The system may not have any modifications that are required for the upgrade, or the modifications may not have been properly recorded in the system.
  Incorrect Configuration: The upgrade configuration might not be set up correctly, leading to the system not recognizing the modifications.
  Transport Issues: There may be issues with the transport requests that contain the modifications, such as missing requests or incorrect transport routes.
  Version Compatibility: The version of the source system may not be compatible with the target version, leading to a lack of modifications.
  
  Solutions:
  
  Check Modification Logs: Review the modification logs to ensure that all necessary modifications are recorded. You can use transaction codes like SE03 or SE01 to check transport requests.
  Review Upgrade Guide: Consult the SAP upgrade guide for your specific version to ensure that all steps have been followed correctly.
  Check Configuration: Verify the configuration settings in the Software Update Manager (SUM) to ensure that they are correct and that the system is set up to recognize modifications.
  Transport Management: Ensure that all transport requests are correctly imported and that there are no missing or failed transports.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide solutions or workarounds for known issues.
  System Check: Perform a system check to ensure that there are no underlying issues with the SAP system that could be causing the error.
  
  Related Information:
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide more detailed insights based on your specific system configuration and upgrade scenario.
  Documentation: Review the official SAP documentation related to the upgrade process for your specific version, as it may contain additional troubleshooting steps or considerations.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their experiences and solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.