How To Fix CNV20201277 - &1 rule with format conflict (fill NUMC fields with numbers only)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 277

• Message text: &1 rule with format conflict (fill NUMC fields with numbers only)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201277 - &1 rule with format conflict (fill NUMC fields with numbers only) ?

  The SAP error message CNV20201277 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a format conflict with fields that are expected to contain numeric values (NUMC fields), but the data being processed does not conform to this requirement.
  Cause:
  The error arises when:
  
  A NUMC (numeric character) field is expected to contain only numeric characters (0-9), but the data being imported or converted contains non-numeric characters (such as letters, special characters, or spaces).
  The data might be incorrectly formatted or sourced from a system that does not enforce the same data type constraints.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Data Validation:
  
  Review the source data for the fields that are causing the error. Ensure that all entries in the NUMC fields contain only numeric characters.
  Use data validation tools or scripts to identify and correct any non-numeric entries.
  
  
  
  Data Cleansing:
  
  Clean the data by removing or replacing any non-numeric characters. This can be done using data processing tools like Excel, SQL scripts, or data transformation tools.
  Ensure that any leading zeros are preserved if they are significant for the data context.
  
  
  
  Mapping and Transformation:
  
  If you are using a mapping file or transformation logic, ensure that the mapping for NUMC fields is correctly defined to only allow numeric values.
  Adjust any transformation rules that may inadvertently introduce non-numeric characters.
  
  
  
  Testing:
  
  After making corrections, re-run the migration or conversion process to check if the error persists.
  It may be helpful to test with a smaller subset of data to quickly identify any remaining issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration or conversion process you are using. There may be additional guidelines or best practices for handling NUMC fields.
  
  
  
  Related Information:
  
  NUMC Data Type: In SAP, NUMC fields are defined to hold numeric values as character strings. They can only contain digits (0-9) and have a fixed length.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, familiarize yourself with the data mapping and transformation options available within the tool.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling data migration issues.
  
  By following these steps, you should be able to resolve the CNV20201277 error and successfully complete your data migration or conversion process.