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

CNV10300020 - Overview

• 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.

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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CNV10300020 - Details

• 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