How To Fix CNV_MBT540 - Accessplan calculation/cluster fill started. For log see extended monitor

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 540

• Message text: Accessplan calculation/cluster fill started. For log see extended monitor

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 CNV_MBT540 - Accessplan calculation/cluster fill started. For log see extended monitor ?

  The SAP error message CNV_MBT540 typically relates to issues encountered during the execution of a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a problem with the access plan calculation or the filling of a cluster during the migration process.
  Cause:
  
  Data Volume: The error may occur due to a large volume of data being processed, which can lead to performance issues or timeouts.
  Configuration Issues: Incorrect configuration settings in the migration cockpit or the source/target systems can lead to access plan calculation failures.
  Database Locks: If there are locks on the database tables being accessed, it can prevent the migration process from completing successfully.
  Insufficient Resources: Lack of sufficient memory or processing power on the database server can lead to failures in processing large datasets.
  Inconsistent Data: Data inconsistencies or integrity issues in the source system can also cause problems during the migration.
  
  Solution:
  
  Check Logs: Review the logs in the extended monitor for detailed error messages that can provide more context about the failure.
  Optimize Data Volume: If possible, reduce the volume of data being processed in a single run. Consider breaking it down into smaller batches.
  Configuration Review: Ensure that all configurations in the migration cockpit are correct and aligned with the source and target systems.
  Database Performance: Monitor the database performance and ensure that there are sufficient resources (CPU, memory, I/O) available during the migration process.
  Check for Locks: Use transaction codes like SM12 to check for any locks on the database tables and resolve them if necessary.
  Data Consistency Check: Perform data consistency checks in the source system to identify and resolve any data integrity issues before migration.
  Increase Timeout Settings: If the process is timing out, consider increasing the timeout settings in the migration cockpit or database.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM37 (Job Monitoring) and SLG1 (Application Log) to check for background job statuses and logs related to the migration process.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the CNV_MBT540 error.
  Documentation: Refer to the official SAP documentation for the Migration Cockpit for best practices and troubleshooting steps.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance, providing them with the detailed logs and context of the error.