How To Fix CNV_10020478 - &1: Length &3 of target det. object &2 is greater than maximum length &4

CNV_10020478 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 478

• Message text: &1: Length &3 of target det. object &2 is greater than maximum length &4

What causes this issue?

The length of target determination object &V2& was specified as &V3&.
However the allowed maximum length of a target determination object is
&V4&. Target determination object values of larger size cannot be stored
in an object table.

How to fix this error?

Define a smaller target determination object for &V1&.
&HINTS&
The maximum length can be defined differently for source and target
determination objects.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020478 - Details

• The SAP error message CNV_10020478 typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during the execution of a conversion program. This error indicates that the length of a target data object exceeds the maximum allowed length defined in the target structure.
  
  Cause:
  The error message can be triggered by several factors:
  
  Data Length Mismatch: The source data being migrated has a length that exceeds the defined maximum length of the target field in the database or data structure.
  Incorrect Mapping: The mapping between source and target fields may not be correctly defined, leading to an attempt to insert data that is too long for the target field.
  Data Quality Issues: The source data may contain unexpected characters or formatting that increases its length beyond what is expected.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Lengths: Review the definitions of the source and target fields.