How To Fix CNV_MBT_46488 - Maintaining consistent scrambling impacts performance of data transfer

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_46 - PCL message class

• Message number: 488

• Message text: Maintaining consistent scrambling impacts performance of data transfer

What causes this issue?

Consistent scrambling may affect performance as the mapping table is
updated / Accessed for every record.

System Response

If this option is marked, the system ensures that the data is scrambled
consistently across all tables. This means that if value A has been
scrambled to value B, then in all tables involving the scrambling rule,
A is always scrambled to B and not to any other new value.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT_46488 - Maintaining consistent scrambling impacts performance of data transfer ?

  The SAP error message CNV_MBT_46488 indicates that maintaining consistent scrambling during data transfer can negatively impact performance. This message is typically encountered in the context of data migration or transformation processes, particularly when using SAP's data migration tools.
  Cause:
  The error arises when the system is configured to maintain consistent scrambling of data during the transfer process. Scrambling is a technique used to anonymize or obfuscate sensitive data to protect it during migration. However, ensuring that the scrambling remains consistent across different data sets can lead to performance degradation, as the system may need to perform additional checks or operations to maintain this consistency.
  Solution:
  To address this issue, consider the following approaches:
  
  
  Evaluate the Need for Consistent Scrambling:
  
  Assess whether consistent scrambling is necessary for your specific use case. If it is not critical, you may choose to disable this feature to improve performance.
  
  
  
  Optimize Data Transfer Settings:
  
  Review the configuration settings for the data transfer process. Look for options that allow you to optimize performance while still meeting your data protection requirements.
  
  
  
  Batch Processing:
  
  If possible, break down the data transfer into smaller batches. This can help reduce the load on the system and improve overall performance.
  
  
  
  Monitor System Performance:
  
  Use SAP performance monitoring tools to identify bottlenecks in the data transfer process. This can help you pinpoint specific areas that may need optimization.
  
  
  
  Consult SAP Documentation:
  
  Refer to the official SAP documentation for the specific data migration tool you are using. There may be additional recommendations or best practices for handling scrambling and performance issues.
  
  
  
  Engage SAP Support:
  
  If the issue persists, consider reaching out to SAP support for assistance. They may provide insights or patches that can help resolve the performance issues related to scrambling.
  
  
  
  Related Information:
  
  Data Migration Tools: Familiarize yourself with the specific SAP tools you are using for data migration (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services).
  Data Protection Regulations: Ensure that any changes made to scrambling settings comply with relevant data protection regulations (e.g., GDPR).
  Performance Tuning: Explore general performance tuning techniques for SAP systems, which can help improve the efficiency of data transfer processes.
  
  By carefully evaluating the need for consistent scrambling and optimizing your data transfer settings, you can mitigate the performance impact associated with this error message.