How To Fix CNV10300020 - &1: Neither entry in exception table nor generic case!

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV10300 - Message class for development class CNV_10300

• Message number: 020

• Message text: &1: Neither entry in exception table nor generic case!

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV10300020 - &1: Neither entry in exception table nor generic case! ?

  The SAP error message CNV10300020 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 the system could not find a corresponding entry in the exception table or a generic case for the data being processed.
  Cause:
  
  Missing Configuration: The error often arises when there is a missing or incorrect configuration in the migration settings or mapping tables.
  Data Issues: The data being migrated may not meet the expected format or criteria defined in the migration rules.
  Custom Logic: If there are custom enhancements or logic applied to the migration process, they may not be handling certain cases correctly.
  Version Mismatch: There could be a mismatch between the source and target system versions, leading to incompatibilities in data structures.
  
  Solution:
  
  Check Exception Tables: Review the exception tables related to the migration process to ensure that all necessary entries are present. You may need to add missing entries or correct existing ones.
  Review Mapping Configuration: Ensure that the mapping configuration for the data migration is correctly set up. This includes checking the source and target field mappings.
  Data Validation: Validate the data being migrated to ensure it adheres to the expected formats and constraints. Cleanse the data if necessary.
  Debugging: If you have access to the development environment, consider debugging the migration process to identify where the error is occurring and why the system cannot find the appropriate entry.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be specific guidelines or troubleshooting steps provided for this error.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  Related Information:
  
  SAP Migration Cockpit: This tool is commonly used for data migration to SAP S/4HANA. Familiarize yourself with its functionalities and configuration options.
  Data Migration Best Practices: Follow best practices for data migration, including thorough testing in a sandbox environment before executing in production.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.