How To Fix CNV_10020189 - &1 &2: Length of TDetObject &3 is greater than maximum length &4

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 189

• Message text: &1 &2: Length of TDetObject &3 is greater than maximum length &4

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020189 - &1 &2: Length of TDetObject &3 is greater than maximum length &4 ?

  The SAP error message CNV_10020189 typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during the execution of a conversion program. This error indicates that the length of a specific field (TDetObject) exceeds the maximum allowed length defined in the target structure.
  Cause:
  The error is caused by one of the following reasons:
  
  Data Length Exceeded: The data being migrated or converted has a length that exceeds the maximum length defined for the target field in the database or data structure.
  Incorrect Mapping: There may be an issue with the mapping of source fields to target fields, where the source field's length is not properly aligned with the target field's definition.
  Data Quality Issues: The source data may contain unexpected or malformed entries that exceed the expected length.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Lengths: Review the definitions of the source and target fields. Ensure that the data being migrated fits within the defined lengths. You can do this by checking the data dictionary (SE11) for the relevant tables and fields.
  
  
  Data Cleansing: If the source data contains entries that exceed the maximum length, you may need to cleanse the data. This could involve truncating the data, removing invalid characters, or transforming the data to fit the target structure.
  
  
  Adjust Mapping: If the mapping between source and target fields is incorrect, adjust the mapping configuration in the migration tool to ensure that the lengths are compatible.
  
  
  Use Conversion Routines: If applicable, use conversion routines to transform the data during the migration process. This can help ensure that the data fits within the required lengths.
  
  
  Testing: After making adjustments, perform a test migration with a smaller dataset to ensure that the changes resolve the issue before proceeding with the full migration.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for any additional guidance or known issues.
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary), SE37 (Function Modules), or ST22 (Dump Analysis) to investigate further.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Data Migration Tools: Familiarize yourself with the specific data migration tools being used (e.g., SAP S/4HANA Migration Cockpit, LSMW) as they may have specific configurations or settings that can help mitigate such issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.