How To Fix CNV_10020765 - &1, &2: Length of source field/obj. &3 and SDetObject &4 differ

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 765

• Message text: &1, &2: Length of source field/obj. &3 and SDetObject &4 differ

What causes this issue?

The rule assigned to the component consists of a determination defined
in &V2&. The length of the passed parameter &V3& for the source
field/object doesn't match the length of the source determination object
&V4& (the lengths are shown in brackets).

How to fix this error?

In transaction CNV_10020_RCOMP, assign a passed parameter with a length
that matches the length of the source determination object.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020765 - &1, &2: Length of source field/obj. &3 and SDetObject &4 differ ?

  The SAP error message CNV_10020765 indicates a mismatch in the length of a source field or object and the corresponding target field or object during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Cause:
  The error occurs when:
  
  The length of the source field (the field from which data is being migrated) does not match the length of the target field (the field in the target system where data is being loaded).
  This can happen due to differences in data types, field definitions, or changes in the data model between the source and target systems.
  It may also occur if there are inconsistencies in the data mapping configuration.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Lengths: 
  
  Verify the definitions of the source and target fields in both the source and target systems. Ensure that the lengths are compatible.
  If the target field is shorter than the source field, you may need to truncate the data or adjust the target field length if possible.
  
  
  
  Adjust Data Mapping:
  
  Review the data mapping configuration in your migration tool. Ensure that the mappings are correctly defined and that the lengths are compatible.
  If necessary, modify the mapping to accommodate the differences in field lengths.
  
  
  
  Data Transformation:
  
  If the source data exceeds the target field length, consider transforming the data before migration. This could involve truncating strings, converting data types, or applying other transformations to ensure compatibility.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or best practices for handling field length discrepancies.
  
  
  
  Testing:
  
  After making adjustments, perform a test migration with a small subset of data to ensure that the changes resolve the error without introducing new issues.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  Migration Tools: Familiarize yourself with the specific migration tools and their capabilities, as they may have built-in features to handle such discrepancies.
  Data Model Changes: Be aware of any changes in the data model between the source and target systems, especially if you are migrating from an older SAP system to S/4HANA.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.