How To Fix CNV_OM_PRESEL121 - Error Messages

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM_PRESEL - Messages for LT Object Based Preselection

• Message number: 121

• Message text: Error Messages

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_OM_PRESEL121 - Error Messages ?

  The SAP error message CNV_OM_PRESEL121 typically relates to issues encountered during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error can occur when there are inconsistencies or issues with the data being processed.
  Cause:
  The CNV_OM_PRESEL121 error message can be triggered by several factors, including:
  
  Data Inconsistencies: The data being migrated may not meet the required format or constraints defined in the target system.
  Missing Required Fields: Certain mandatory fields may be missing in the source data.
  Invalid Data Types: The data types in the source system may not match the expected data types in the target system.
  Configuration Issues: There may be configuration settings in the migration tool that are not correctly set up.
  Business Rules Violations: The data may violate specific business rules or validations defined in the target system.
  
  Solution:
  To resolve the CNV_OM_PRESEL121 error, you can follow these steps:
  
  Check the Error Log: Review the detailed error log provided by the migration tool to identify the specific records or fields causing the issue.
  Validate Source Data: Ensure that the source data is complete, accurate, and adheres to the required formats and constraints.
  Fill in Missing Fields: If any mandatory fields are missing, populate them with the appropriate values.
  Correct Data Types: Ensure that the data types in the source match the expected data types in the target system.
  Review Configuration: Check the configuration settings of the migration tool to ensure they are set up correctly.
  Test Migration: Perform a test migration with a smaller dataset to identify and resolve issues before executing a full migration.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for additional guidance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or fixes related to this error.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit for best practices and troubleshooting tips.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.