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

CNV_20100645 - Overview

• 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.

CNV_20100645 - Details

• 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