How To Fix CNV_20800078 - The scenario is 1:N split of customer numbers: Not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 078

• Message text: The scenario is 1:N split of customer numbers: Not supported

What causes this issue?

It was found that a customer record appears more than once as an old
value in your mapping, which corresponds to a split scenario.

System Response

Splitting customer records is not possible with the current package.

How to fix this error?

Remove the split by making sure that every customer records occurs only
once as an old value in the mapping.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800078 - The scenario is 1:N split of customer numbers: Not supported ?

  The SAP error message CNV_20800078 indicates that there is an issue with the 1:N split of customer numbers during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
  Cause:
  The error message "The scenario is 1:N split of customer numbers: Not supported" suggests that the system is attempting to split a single customer number into multiple customer numbers, which is not supported in the current configuration or migration scenario. This can occur due to:
  
  Data Model Limitations: The data model may not support splitting a single entity into multiple entities in the way that is being attempted.
  Configuration Issues: The migration settings or configuration may not be set up to handle such a split.
  Data Integrity Constraints: There may be constraints in the data that prevent the split from being executed properly.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review Migration Settings: Check the migration settings to ensure that they are configured correctly for the intended data transformation. Ensure that the scenario allows for the desired data structure.
  
  
  Data Mapping: Ensure that the mapping of customer numbers is correctly defined. If you need to split customer numbers, you may need to create a custom mapping or transformation logic that adheres to the system's requirements.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be guidelines or limitations regarding the splitting of customer numbers.
  
  
  Data Preparation: If the split is necessary, consider preparing the data in advance. This may involve creating new customer records in the source system or adjusting the data structure before migration.
  
  
  Engage SAP Support: If the issue persists, consider reaching out to SAP support for assistance. They may provide insights specific to your version of SAP and the migration tool you are using.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on handling customer number splits.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its capabilities, as well as any limitations regarding data transformations.
  Data Governance: Ensure that your data governance policies are in place to manage customer data effectively, especially when dealing with migrations or conversions.
  
  By following these steps, you should be able to address the CNV_20800078 error and successfully manage the customer number migration process.