Message type: E = Error
Message class:  CNV_10020 - Message class for package 10020 
Message number: 769
Message text: &1, &2: Length of source field/obj. &3 and SDetObject &4 differ
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The SAP error message CNV_10020769 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is a mismatch in the length of the source field or object compared to the target structure or object.
Cause: The error message CNV_10020769 is triggered when: The length of a source field (or object) does not match the expected length in the target structure. There may be a discrepancy in the data types or lengths defined in the source and target systems. The data being migrated may contain values that exceed the defined length in the target structure.
Solution: To resolve this error, you can take the following steps: Check Field Lengths: Review the source and target field definitions to ensure that the lengths match. This can be done by checking the data dictionary (SE11) for both the source and target structures. Adjust Source Data: If the source
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