How To Fix CNV_MBT_46258 - Selection member id already present

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_46 - PCL message class

• Message number: 258

• Message text: Selection member id already present

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_46258 - Selection member id already present ?

  The SAP error message CNV_MBT_46258 with the description "Selection member id already present" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a duplicate entry for a selection member ID in the data being processed.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Duplicate Entries: The data being imported or processed contains duplicate selection member IDs, which are not allowed.
  Incorrect Mapping: There may be an issue with how the data is mapped or structured, leading to the same ID being referenced multiple times.
  Data Integrity Issues: The source data may have integrity issues, such as missing or incorrect identifiers.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Review the data being imported to identify any duplicate selection member IDs. You can use tools like Excel or SQL queries to find duplicates in your dataset.
  
  
  
  Data Cleansing:
  
  Remove or consolidate duplicate entries in your source data. Ensure that each selection member ID is unique.
  
  
  
  Review Mapping Configuration:
  
  Check the mapping configuration in the migration tool to ensure that it is set up correctly and that there are no unintended duplications in the mapping.
  
  
  
  Validate Source Data:
  
  Ensure that the source data is clean and adheres to the expected format and structure. Validate that all required fields are populated correctly.
  
  
  
  Re-run the Migration:
  
  After making the necessary corrections, re-run the migration process to see if the error persists.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for best practices and troubleshooting tips.
  Community Forums: Consider searching or posting in SAP community forums or SAP support channels for additional assistance from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to engage with SAP support for more in-depth troubleshooting.