How To Fix CNV_DMC_MC044 - Select exactly one row

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC - Migration Object Modeler

• Message number: 044

• Message text: Select exactly one row

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_DMC_MC044 - Select exactly one row ?

  The SAP error message CNV_DMC_MC044: Select exactly one row typically occurs in the context of data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that the system expects the user to select a single row from a list or table, but either no rows or multiple rows have been selected.
  Cause:
  
  Multiple Selections: The user has selected more than one row when the system requires only one.
  No Selection: The user has not selected any row at all.
  Incorrect Filtering: The filtering criteria applied may not yield a single row, leading to confusion in selection.
  User Interface Issue: Sometimes, the user interface may not behave as expected, leading to unintended selections.
  
  Solution:
  
  Select One Row: Ensure that you select exactly one row from the list or table. If you have selected multiple rows, deselect them and choose only one.
  Check Filters: Review any filters or search criteria you have applied to ensure they are set correctly to yield a single result.
  Refresh the View: If the data has changed or if you suspect a UI glitch, try refreshing the view or reloading the data.
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific transaction or process you are working on for any additional guidance.
  Contact Support: If the issue persists and you are unable to resolve it, consider reaching out to your SAP support team or consulting the SAP community for further assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with the transaction codes related to data migration, such as LTMC (Legacy Transfer Migration Cockpit) or others that may be relevant to your scenario.
  User Roles and Permissions: Ensure that your user role has the necessary permissions to perform the actions you are attempting, as this can sometimes lead to unexpected behavior.
  
  By following these steps, you should be able to resolve the CNV_DMC_MC044 error and proceed with your data migration tasks.