How To Fix CNV_21526012 - Multiple lines with old client &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_21526 - Client Rename

• Message number: 012

• Message text: Multiple lines with old client &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_21526012 - Multiple lines with old client &1 ?

  The SAP error message CNV_21526012, which states "Multiple lines with old client &1," typically occurs during data migration or conversion processes, particularly when using SAP's tools for client or data migration. This error indicates that there are multiple entries in the source data that correspond to the same client, which can lead to conflicts or inconsistencies during the migration process.
  Cause:
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the source data for the specified client. This can happen if the data was not properly cleaned or if there are multiple records that should be unique.
  Data Structure Issues: The data structure may not align with the expected format, leading to multiple records being interpreted as belonging to the same client.
  Configuration Issues: Incorrect configuration settings in the migration tool or process can also lead to this error.
  
  Solution:
  
  
  Data Cleansing: Review the source data for duplicates. Identify and remove or consolidate duplicate entries for the specified client. This may involve:
  
  Running queries to find duplicates.
  Analyzing the data to determine which records should be retained.
  Merging records if necessary.
  
  
  
  Check Data Mapping: Ensure that the data mapping and transformation rules are correctly defined. This includes verifying that the fields being migrated are correctly aligned with the target structure.
  
  
  Review Migration Settings: Check the settings and parameters used in the migration tool. Ensure that they are configured correctly to handle the data being migrated.
  
  
  Testing: After making changes, perform a test migration with a smaller dataset to ensure that the issue is resolved before attempting a full migration.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using. There may be specific guidelines or known issues related to this error.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Tools: Familiarize yourself with the specific migration tools being used (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) as they may have unique features or settings that can help resolve this issue.
  Data Governance: Implementing data governance practices can help prevent similar issues in future migrations by ensuring data quality and consistency.
  
  By addressing the root cause of the error and following the suggested solutions, you should be able to resolve the CNV_21526012 error and successfully complete your data migration.