How To Fix CNV_20100645 - Activity '&1' is currently running; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 645

• Message text: Activity '&1' is currently running; see long text

What causes this issue?

Activity '&V1&' is running.

System Response

For this reason, you can open the mapping maintenance only in display
mode.

How to fix this error?

Wait until activity '&V1&' is completed, or cancel it. Then change the
mapping as required.
&NOTES&
If the activity '&V1&' is not running, but terminated, re-execute it
first.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100645 - Activity '&1' is currently running; see long text ?

  The SAP error message CNV_20100645 indicates that a specific activity (denoted by '&1') is currently running in the system. This message is typically encountered during data migration or conversion processes, particularly when using SAP's tools for system conversion or data migration, such as the SAP S/4HANA Migration Cockpit or other related tools.
  Cause:
  The error occurs because the system is trying to execute an operation that cannot proceed while another activity is still in progress. This is a common scenario in environments where multiple processes or jobs are being executed simultaneously, and the system is designed to prevent conflicts or data integrity issues.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Running Activities: 
  
  Use transaction codes like SM37 (Job Monitoring) to check for any background jobs that are currently running. Look for jobs related to the activity mentioned in the error message.
  
  
  
  Wait for Completion: 
  
  If you identify that the activity is indeed running, you may need to wait for it to complete before attempting to start the new activity.
  
  
  
  Cancel or Terminate Jobs: 
  
  If the running job is stuck or taking too long, you may consider canceling it. Be cautious with this step, as terminating jobs can lead to data inconsistencies.
  
  
  
  Review Logs: 
  
  Check the logs for the running activity to understand its status and whether it is functioning as expected or if there are any issues that need to be addressed.
  
  
  
  Consult Documentation: 
  
  Refer to the SAP documentation or notes related to the specific activity you are trying to execute for any additional troubleshooting steps or known issues.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot determine the cause, consider reaching out to SAP support for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM37 (Job Monitoring), SM21 (System Log), and ST22 (Dump Analysis) to help diagnose issues.
  SAP Notes: Search for relevant SAP Notes that may provide additional insights or patches related to the error message.
  System Performance: Ensure that your system has adequate resources (CPU, memory, etc.) to handle multiple activities, as performance issues can sometimes lead to jobs hanging or taking longer than expected.
  
  By following these steps, you should be able to address the CNV_20100645 error and proceed with your activities in SAP.