How To Fix CNV_DMC_MC_EXCEPTION186 - Root structure is not allowed to be set to not visible

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

• Message number: 186

• Message text: Root structure is not allowed to be set to not visible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION186 - Root structure is not allowed to be set to not visible ?

  The SAP error message CNV_DMC_MC_EXCEPTION186 indicates that there is an issue with the visibility settings of a root structure in the context of a data migration or conversion process. This error typically arises in the Data Migration Cockpit (DMC) when trying to configure or execute a migration project.
  Cause:
  The root structure in a data migration project is essential for defining the main data model. Setting it to "not visible" is not allowed because it would prevent the system from recognizing the primary data structure needed for the migration process. This error can occur due to:
  
  Incorrect Configuration: The root structure may have been inadvertently set to not visible during the configuration of the migration project.
  Data Model Issues: There may be inconsistencies or errors in the data model that prevent the root structure from being properly recognized.
  User Permissions: The user may not have the necessary permissions to modify the visibility settings of the root structure.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration:
  
  Go to the Data Migration Cockpit and review the configuration of your migration project.
  Ensure that the root structure is set to "visible." You may need to edit the settings to correct this.
  
  
  
  Review Data Model:
  
  Verify the data model associated with your migration project. Ensure that all necessary structures are correctly defined and that there are no inconsistencies.
  If you have made recent changes to the data model, consider reverting those changes or reviewing them for errors.
  
  
  
  User Permissions:
  
  Check the user roles and permissions to ensure that you have the necessary access to modify the migration project settings.
  If you lack the required permissions, contact your system administrator to gain access.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation or notes related to the Data Migration Cockpit for any specific guidelines or troubleshooting steps related to this error.
  
  
  
  SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance. Provide them with the error message and any relevant details about your migration project.
  
  
  
  Related Information:
  
  Data Migration Cockpit (DMC): A tool provided by SAP to facilitate the migration of data from legacy systems to SAP S/4HANA or other SAP solutions.
  Root Structure: The primary data structure that defines the main entity in a migration project. It is crucial for the integrity and success of the data migration process.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  
  By following these steps, you should be able to identify and resolve the issue related to the CNV_DMC_MC_EXCEPTION186 error message.