How To Fix CNV_20800026 - Customer &1 will be coverted to &2 with new account group &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 026

• Message text: Customer &1 will be coverted to &2 with new account group &3

What causes this issue?

Old customer numbers will be merged to &V2& having properties of old
customer &V1&, customer &V1& is assigned to account group &V4& and
converted customer number &V2& will be assigned to account group &V3&
(as per given mapping).
If this stands true, ignore the message.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800026 - Customer &1 will be coverted to &2 with new account group &3 ?

  The SAP error message CNV_20800026 indicates that during a data conversion process, a customer record (identified by the customer number &1) is being converted to a new customer type or account group (&2) with a new account group identifier (&3). This message typically arises during data migration or conversion activities, such as when using SAP's Customer Migration Tool or during system upgrades.
  Cause:
  
  Data Migration: The error usually occurs when there is a mismatch or inconsistency in the customer data that needs to be converted. This can happen if the customer account group is not compatible with the new structure or if the customer data does not meet the requirements of the new account group.
  Configuration Issues: The account groups may not be properly configured in the target system, or there may be missing settings that prevent the conversion from being completed successfully.
  Data Integrity: There may be issues with the integrity of the customer data, such as missing mandatory fields or incorrect data formats.
  
  Solution:
  
  Review Configuration: Check the configuration of the account groups in the target system. Ensure that the new account group (&3) is correctly set up and that it is compatible with the customer data being converted.
  Data Validation: Validate the customer data to ensure that all required fields are populated and that the data adheres to the expected formats. This may involve cleaning up the data before the conversion process.
  Mapping Rules: Review the mapping rules used in the conversion process. Ensure that the mapping from the old account group to the new account group is correctly defined.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool or process you are using. There may be specific guidelines or prerequisites that need to be followed.
  Testing: Conduct a test migration with a smaller dataset to identify any potential issues before performing the full migration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional guidance on customer data migration.
  Transaction Codes: Familiarize yourself with transaction codes related to customer master data management, such as XD01 (Create Customer), XD02 (Change Customer), and XD03 (Display Customer).
  Migration Tools: If you are using a specific migration tool (like SAP S/4HANA Migration Cockpit), review the tool's documentation for best practices and troubleshooting tips.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.