How To Fix CNV_10020187 - Determination object &1: Length &2 is greater than maximum length &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 187

• Message text: Determination object &1: Length &2 is greater than maximum length &3

What causes this issue?

The length of determination object &V1& was specified as &V2&. Be aware
that you cannot use the determination object within a determination path
because the largest object table allows a maximum length of &V3&.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

For the use in a determination path define shorter determination
objects.
For the assignemnt of evaluation rules to non-transparent field
components (transaction CNV_10020_RDTOBJ) the determination object &V1&
can be used with the length of &V2&.
&HINTS&
The maximum length can be defined differently for source and target
determination objects.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020187 - Determination object &1: Length &2 is greater than maximum length &3 ?

  The SAP error message CNV_10020187 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data transfer tools. This error indicates that a certain field (determination object) has a value whose length exceeds the maximum length defined for that field in the target system.
  Cause:
  
  Data Length Exceedance: The value being transferred to the target system is longer than the maximum length allowed for that specific field. This can happen if the source data has been incorrectly formatted or if the field definitions in the source and target systems do not match.
  Field Mismatches: There may be discrepancies between the source and target data models, where the source field allows for longer values than the target field can accommodate.
  Data Quality Issues: The source data may contain unexpected characters or formatting that increase the length of the data being transferred.
  
  Solution:
  
  Identify the Field: Check the error message for the specific determination object (&1) and the lengths involved (&2 and &3). This will help you identify which field is causing the issue.
  Review Source Data: Examine the source data for the specific field to see if there are any values that exceed the maximum length defined in the target system.
  Adjust Data: If possible, modify the source data to ensure that all values fit within the maximum length constraints of the target field. This may involve truncating values or cleaning up the data.
  Modify Target Field: If the source data is valid and should be retained, consider adjusting the target field's maximum length in the target system to accommodate the incoming data. This may require changes to the data model or database schema.
  Data Mapping: Ensure that the data mapping between the source and target systems is correctly defined, and that any transformations applied during the migration process are appropriate.
  Testing: After making adjustments, perform a test migration to ensure that the error does not occur again.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error.
  Data Migration Tools: Familiarize yourself with the tools being used for data migration, such as the SAP S/4HANA Migration Cockpit, to understand their limitations and configurations.
  Documentation: Review the documentation for the specific migration process you are using, as it may contain information on field lengths and data types.
  
  By following these steps, you should be able to resolve the CNV_10020187 error and successfully complete your data migration.