How To Fix CNV_MBT_46042 - Illegal column name

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_46 - PCL message class

• Message number: 042

• Message text: Illegal column name

Self-Explanatory Message

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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_46042 - Illegal column name ?

  The SAP error message CNV_MBT_46042 Illegal column name typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the naming of a column in the data being processed.
  Cause:
  
  Invalid Characters: The column name may contain illegal characters that are not allowed in SAP database table names or field names. This can include special characters, spaces, or names that are too long.
  Reserved Keywords: The column name might be a reserved keyword in the database or SAP system, which cannot be used as a column name.
  Naming Conventions: The column name may not adhere to the naming conventions set by SAP, such as length restrictions or format requirements.
  Data Mapping Issues: During the mapping of source data to target structures, the mapping may have been incorrectly defined, leading to the generation of an illegal column name.
  
  Solution:
  
  Check Column Names: Review the column names in your source data and ensure they conform to SAP's naming conventions. Remove any illegal characters and ensure that the names are not too long.
  Rename Columns: If you identify any column names that are invalid, rename them in your source data or in the mapping configuration to valid names.
  Review Mapping Configuration: Check the mapping configuration in the migration tool to ensure that the column names are correctly defined and do not generate illegal names.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using to understand the naming conventions and restrictions.
  Testing: After making changes, re-run the migration process to see if the error persists.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes 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 tool you are using for detailed guidelines on data migration.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed, and solutions shared by other users.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.