How To Fix CNV_10020188 - &1 &2: Length of SDetObject &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: 188

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

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020188 - &1 &2: Length of SDetObject &3 is greater than maximum length &4 ?

  The SAP error message CNV_10020188 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 data object (SDetObject) exceeds the maximum allowed length defined in the system.
  Cause:
  The error is caused by one of the following reasons:
  
  Data Length Exceeded: The data being processed has a length that exceeds the maximum length defined for that particular field or object in the target system.
  Mapping Issues: There may be a mismatch in the data mapping between the source and target systems, where the source data has longer values than the target can accommodate.
  Configuration Errors: Incorrect configuration settings in the migration or conversion tool may lead to this error.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Object: Check the error message details to identify the specific object (SDetObject) that is causing the issue. The message will typically provide the object name and the lengths involved.
  
  
  Review Data: Examine the data being migrated or converted. Look for any entries that exceed the maximum length specified in the target system. You may need to truncate or modify these entries to fit within the allowed limits.
  
  
  Adjust Target Field Length: If possible, consider increasing the maximum length of the target field in the database schema to accommodate the incoming data. This may require changes in the data model and should be done with caution.
  
  
  Modify Mapping Rules: If you are using a mapping tool, review the mapping rules to ensure that they correctly handle the data lengths. Adjust the mappings as necessary to prevent length violations.
  
  
  Data Cleansing: Implement data cleansing processes to ensure that the data being migrated meets the length requirements before the migration occurs.
  
  
  Testing: After making adjustments, perform a test migration with a subset of data to ensure that the error is resolved before proceeding with the full migration.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to data migration and the specific error message for any additional guidance or patches that may address the issue.
  Documentation: Review the documentation for the data migration tool you are using (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) for best practices and configuration settings.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.