How To Fix CNV812 - No free differentiator (letter) available

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 812

• Message text: No free differentiator (letter) available

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV812 - No free differentiator (letter) available ?

  The SAP error message "CNV812 No free differentiator (letter) available" typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that the system has run out of available differentiators (letters) that can be used to distinguish between different data records or objects during the conversion process.
  Cause:
  
  Exhaustion of Differentiators: The system has a limited number of differentiators (usually letters A-Z) that can be used. If all available differentiators are already in use, the system cannot assign a new one.
  Data Volume: A large volume of data being processed may lead to the rapid consumption of available differentiators.
  Configuration Issues: Incorrect configuration settings in the migration tool or process may lead to inefficient use of differentiators.
  
  Solution:
  
  Check Current Usage: Review the current usage of differentiators in the system. You may need to identify which differentiators are currently in use and whether they can be released or reused.
  Increase Differentiators: If possible, consider increasing the number of differentiators available in the system. This may involve configuration changes or adjustments in the migration tool settings.
  Optimize Data Migration: Optimize the data migration process to reduce the number of differentiators needed. This could involve batching data or breaking down the migration into smaller, more manageable parts.
  Cleanup: If there are old or unused differentiators, consider cleaning them up to free up space for new ones.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using for any additional configuration options or best practices related to differentiators.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on managing differentiators.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if this is impacting a critical migration project.
  
  By following these steps, you should be able to resolve the "CNV812 No free differentiator (letter) available" error and continue with your data migration or conversion process.