How To Fix CNV_CDMC_CC034 - Select only one system

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CC - CDMC - Messages for the Control Center

• Message number: 034

• Message text: Select only one system

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDMC_CC034 - Select only one system ?

  The SAP error message CNV_CDMC_CC034 ("Select only one system") typically occurs in the context of data migration or conversion processes, particularly when using the SAP Conversion Tools or the SAP S/4HANA Migration Cockpit. This error indicates that the system expects the user to select only one system for a specific operation, but multiple systems have been selected instead.
  Cause:
  
  Multiple System Selection: The most common cause of this error is that the user has inadvertently selected more than one system in a dropdown or selection list where only a single system is allowed.
  Configuration Issues: There may be a misconfiguration in the migration settings or parameters that allows for multiple selections when only one is expected.
  User Interface Limitations: The user interface may not be clear, leading users to believe they can select multiple systems when they cannot.
  
  Solution:
  
  Review Selections: Go back to the selection screen where the error occurred and ensure that only one system is selected. Deselect any additional systems that may have been inadvertently chosen.
  Check Configuration: If you are an administrator or have access to configuration settings, review the migration or conversion settings to ensure that they are set up correctly to allow only single system selection.
  Consult Documentation: Refer to the official SAP documentation or help guides related to the specific migration or conversion tool you are using. This may provide insights into the expected behavior and any limitations.
  User Training: If this error is common among multiple users, consider providing training or guidance on how to properly use the selection screens to avoid confusion.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums where other users may have encountered the same issue and can share their solutions or experiences.
  Version Specifics: Ensure that you are aware of the specific version of SAP you are using, as the behavior of tools and error messages can vary between versions.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.