How To Fix CNV_10020042 - Elem. relationship &1: Lengths of det. obj. &2 and table field &3 differ

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 042

• Message text: Elem. relationship &1: Lengths of det. obj. &2 and table field &3 differ

What causes this issue?

During the definition of the elementary relationship &V1&, determination
object &V2& was assigned table field &V3& (the number in brackets is the
length or number of characters).
The length of the determination object differs from the length of the
table field. These two values must be identical.

How to fix this error?

It is possible that an incorrect table field was assigned. Correct the
definition accordingly.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020042 - Elem. relationship &1: Lengths of det. obj. &2 and table field &3 differ ?

  The SAP error message CNV_10020042 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 lengths of the data elements involved in the migration process.
  Cause:
  The error message "Elem. relationship &1: Lengths of det. obj. &2 and table field &3 differ" suggests that:
  
  There is a discrepancy between the length of a data element (det. obj. &2) and the corresponding field in a database table (table field &3).
  This can happen if the source data structure has a different length than the target structure defined in the SAP system.
  It may also occur if there are changes in the data model between different versions of SAP or if the data types are not compatible.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Element Lengths:
  
  Verify the lengths of the data elements in the source system and the target system. Ensure that they match.
  You can do this by checking the data dictionary (SE11) for the relevant data elements and fields.
  
  
  
  Adjust Data Mapping:
  
  If the lengths do not match, you may need to adjust the mapping in your migration project. This could involve changing the target field length or modifying the source data to fit the target structure.
  
  
  
  Data Transformation:
  
  If necessary, implement data transformation logic to truncate or pad the data to ensure that it fits the required length in the target system.
  
  
  
  Review Migration Settings:
  
  Check the settings in the migration tool you are using. Ensure that the mapping and transformation rules are correctly defined.
  
  
  
  Testing:
  
  After making adjustments, perform a test migration to ensure that the error is resolved and that data is being migrated correctly.
  
  
  
  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: SE11 (Data Dictionary), SE37 (Function Modules), and ST22 (Dump Analysis) can be useful for troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, review the migration object definitions and ensure they are correctly configured.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.