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

CNV_10020042 - Overview

• 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.

CNV_10020042 - Details

• 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