How To Fix CNV_OM_PRESEL164 - Simulation of tasks requires a dialog RFC connection


SAP Error Message - Details

  • Message type: E = Error

  • Message class: CNV_OM_PRESEL - Messages for LT Object Based Preselection

  • Message number: 164

  • Message text: Simulation of tasks requires a dialog RFC connection

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  • Self-Explanatory Message

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Smart SAP Assistant

  • What is the cause and solution for SAP error message CNV_OM_PRESEL164 - Simulation of tasks requires a dialog RFC connection ?

    The SAP error message CNV_OM_PRESEL164 indicates that a dialog RFC (Remote Function Call) connection is required for the simulation of tasks in the context of a data migration or conversion process. This error typically arises when the system is unable to establish a proper dialog connection to execute the required tasks.

    Cause:

    1. Missing Dialog RFC Connection: The system may not have a dialog RFC connection configured or available.
    2. Network Issues: There could be network connectivity issues preventing the establishment of the dialog RFC connection.
    3. Authorization Issues: The user may not have the necessary authorizations to establish a dialog RFC connection.
    4. System Configuration: The system may not be properly configured to allow dialog RFC connections.

    Solution:

    1. Check RFC Connections:

      • Go to transaction SM59 and check the configuration of the RFC connections.
      • Ensure that the dialog RFC connection is properly set up and active.
    2. Test the Connection:

      • In transaction SM59, select the relevant RFC connection and use the "Test Connection" option to verify that it is working correctly.
    3. Check User Authorizations:

      • Ensure that the user executing the task has the necessary authorizations to perform actions that require a dialog RFC connection.
    4. Network Configuration:

      • Verify that there are no network issues preventing the connection. This may involve checking firewall settings or network routes.
    5. System Configuration:

      • Ensure that the SAP system is configured to allow dialog RFC connections. This may involve checking the instance profile settings.
    6. Consult Documentation:

      • Refer to SAP Notes or documentation related to the specific migration or conversion process you are working on for any additional configuration steps or requirements.

    Related Information:

    • SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error message.
    • Transaction Codes: Familiarize yourself with transaction codes like SM59 (RFC Destinations), SU01 (User Maintenance), and ST22 (Dump Analysis) for troubleshooting.
    • SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered similar issues.

    By following these steps, you should be able to identify and resolve the issue related to the CNV_OM_PRESEL164 error message.

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