How To Fix CNV_MBT_ULV004 - Too many messages with context data logged (limit &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT_ULV - Messages for Unified Log Viewer

• Message number: 004

• Message text: Too many messages with context data logged (limit &1)

What causes this issue?

Too many messages containing context data have been logged. The limit of
&V1& messages has been reached.

System Response

No further context data will be written to the messages, although
messages themselves will be written (as long as other limits are not
exceeded).

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_ULV004 - Too many messages with context data logged (limit &1) ?

  The SAP error message CNV_MBT_ULV004 indicates that there are too many messages with context data logged, exceeding a predefined limit. This error typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools.
  Cause:
  The error is caused by the logging mechanism in SAP that tracks messages related to data migration. Each message logged can consume system resources, and there is a limit set on the number of messages that can be logged for a particular context. When this limit is exceeded, the system generates the error message CNV_MBT_ULV004.
  Solution:
  To resolve this issue, you can consider the following approaches:
  
  
  Increase the Logging Limit:
  
  If you have access to the system settings, you may be able to increase the limit for the number of messages that can be logged. This can usually be done in the configuration settings of the data migration tool you are using.
  
  
  
  Review and Optimize Data Migration Process:
  
  Analyze the data migration process to identify if there are unnecessary messages being logged. You may want to optimize the process to reduce the number of messages generated.
  
  
  
  Clear Existing Logs:
  
  If the logs are not needed, you can clear existing log entries to free up space for new messages. This can be done through transaction codes like SLG1 (Application Log) or other relevant tools.
  
  
  
  Batch Processing:
  
  If possible, break down the data migration into smaller batches. This can help in managing the number of messages logged at any given time.
  
  
  
  Consult Documentation:
  
  Refer to the official SAP documentation or notes related to the specific data migration tool you are using. There may be specific recommendations or configurations that can help mitigate this issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you are unable to resolve it, consider reaching out to SAP Support for assistance. They may provide insights specific to your system configuration and usage.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SLG1 (for viewing application logs) and others relevant to your data migration tool.
  SAP Notes: Check for any SAP Notes related to the error message CNV_MBT_ULV004 for additional guidance or patches that may address the issue.
  Performance Monitoring: Monitor system performance during data migration to identify any bottlenecks or issues that may contribute to excessive logging.
  
  By following these steps, you should be able to address the CNV_MBT_ULV004 error and continue with your data migration process effectively.