How To Fix CNV_12000129 - '&1' old value: '&2' and new value: '&3'

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_12000 - Messages for shorttext and description conversion

• Message number: 129

• Message text: '&1' old value: '&2' and new value: '&3'

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_12000129 - '&1' old value: '&2' and new value: '&3' ?

  The SAP error message CNV_12000129 typically relates to data conversion issues during a migration or data transfer process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a conflict between an old value and a new value for a specific field during the data migration process.
  Cause:
  
  Data Inconsistency: The old value ('&2') in the source system does not match the expected format or constraints of the new value ('&3') in the target system.
  Mapping Issues: There may be a problem with the mapping of fields between the source and target systems, leading to incompatible values.
  Data Type Mismatch: The data types of the fields in the source and target systems may not align, causing issues when trying to convert or transfer the data.
  Business Rules Violation: The new value may violate business rules or constraints defined in the target system.
  
  Solution:
  
  Review Data Mapping: Check the mapping configuration to ensure that the old and new values are correctly aligned. Make sure that the transformation rules are correctly defined.
  Data Validation: Validate the data in the source system to ensure that it meets the requirements of the target system. This may involve cleaning or transforming the data before migration.
  Adjust Business Rules: If the new value is valid but does not meet certain business rules, consider adjusting those rules or providing exceptions as necessary.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using to understand the expected formats and constraints for the fields involved.
  Error Logs: Check the error logs for more detailed information about the specific records causing the issue. This can help identify patterns or specific data points that need to be addressed.
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide guidance on data migration issues.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its functionalities, as it provides tools for data mapping and transformation.
  Data Quality Tools: Consider using data quality tools to assess and clean your data before migration to minimize issues during the process.
  
  If the problem persists after trying the above solutions, it may be beneficial to engage with SAP support or a consultant who specializes in data migration to get more tailored assistance.