How To Fix CNV_10020295 - &1 &2: Single determ. from object table is not possible for cluster data

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 295

• Message text: &1 &2: Single determ. from object table is not possible for cluster data

What causes this issue?

The relationship data for the determination path is meant to uploaded
from the object table one by one at runtime. This is only possible if
the data is stored in a transparent object table. However the object
table used here is cluster table CNV_10020_CLU.

System Response

Single determination is not possible.

How to fix this error?

Normally, single determination must be used only if not all
relationships for the determination path can be uploaded to the main
memory. If this is the case, save the data in a transparent object
table.
<zh>Note:</> If the object relationships have already been written to a
cluster table, you can copy this table into a transparent object table
using transaction CNV_10020_COPY.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020295 - &1 &2: Single determ. from object table is not possible for cluster data ?

  The SAP error message CNV_10020295 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 the system is unable to determine a single record from a cluster table due to the nature of the data structure.
  Cause:
  The error arises when the system attempts to read data from a cluster table, which is a type of database table that stores related data in a compressed format. Cluster tables can contain multiple records for a single key, making it impossible for the system to determine a single record based on the provided key. This situation often occurs when:
  
  Data Structure: The data being processed is stored in a cluster table, and the migration process is trying to extract a single record from it.
  Key Ambiguity: The key used to access the data does not uniquely identify a single record in the cluster table.
  Incompatible Data: The data being migrated may not be compatible with the expected format or structure in the target system.
  
  Solution:
  To resolve this error, consider the following steps:
  
  Review Data Model: Check the data model and understand how the cluster tables are structured. Identify the relevant cluster tables and their relationships.
  Adjust Key Fields: Ensure that the key fields used in the migration process are sufficient to uniquely identify records. You may need to include additional fields to create a unique key.
  Data Extraction: If possible, extract the data from the cluster table into a flat structure or a transparent table format before migration. This can help avoid issues with ambiguous keys.
  Use Migration Tools: Utilize SAP's data migration tools that are designed to handle cluster data appropriately. These tools may have built-in logic to manage cluster tables.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration scenario you are working on. There may be specific guidelines or best practices for handling cluster data.
  Testing: Perform thorough testing with a subset of data to ensure that the migration process works as expected before executing it on the entire dataset.
  
  Related Information:
  
  Cluster Tables: Understand the concept of cluster tables in SAP, which are used to store related data in a compressed format. Common examples include tables like BSEG (Accounting Document Segment) and BKPF (Accounting Document Header).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling cluster data during migration.
  SAP Community: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions or experiences.
  
  By following these steps and understanding the underlying causes, you should be able to address the CNV_10020295 error effectively.