How To Fix CNV_MBT_SHELL008 - Error when leaving screen

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_SHELL - Shell Creation

• Message number: 008

• Message text: Error when leaving screen

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 CNV_MBT_SHELL008 - Error when leaving screen ?

  The SAP error message CNV_MBT_SHELL008 typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error message indicates that there is an issue when trying to leave a screen, often related to data validation or incomplete entries.
  Causes:
  
  Incomplete Data Entry: Required fields may not be filled out completely, leading to validation errors.
  Data Validation Issues: The system may be trying to validate data that does not meet the required criteria or format.
  Technical Issues: There could be underlying technical issues, such as problems with the migration tool or configuration settings.
  Authorization Issues: The user may not have the necessary authorizations to perform the action, leading to an error when trying to leave the screen.
  
  Solutions:
  
  Check Required Fields: Ensure that all mandatory fields on the screen are filled out correctly. Look for any indicators that show which fields are required.
  Validate Data: Review the data entered for any inconsistencies or errors. Make sure that the data adheres to the expected formats and values.
  Review Logs: Check the application logs or error logs for more detailed information about the error. This can provide insights into what specifically is causing the issue.
  User Authorizations: Verify that the user has the necessary authorizations to perform the actions on the screen. If not, contact your system administrator to adjust the permissions.
  Restart the Process: Sometimes, simply restarting the transaction or the migration process can resolve temporary issues.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for any known issues or additional troubleshooting steps.
  
  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 to see if other users have encountered the same issue and what solutions they found effective.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to identify and resolve the issue related to the CNV_MBT_SHELL008 error message.