Message type: E = Error
Message class:  CNV_CDOP_CA - CDOP Clearing Analysis 
Message number: 046
Message text: & is already running
You have attempted to reexecute the activity which is already running
on the defined systems.
It is not possible to reexecute the running activity.
You must wait till the activity reaches the Finished or the Aborted
state.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_CDOP_CA046 typically indicates that a conversion process is already running in the system. This error is often encountered during data migration or conversion activities, particularly when using the SAP S/4HANA Migration Cockpit or other data conversion tools.
Cause: Concurrent Execution: The most common cause of this error is that the same conversion process is already being executed by another user or session. This can happen if multiple users attempt to start the same migration or conversion job simultaneously. Stuck Processes: Sometimes, a previous conversion job may not have completed successfully and is still in a running state, preventing new jobs from starting. System Lock: There may be a system lock or a transaction that has not been properly released, causing the system to think that the process is still active.
Solution: Check Running Processes: Use transaction codes like SM37 (Job Monitoring) or SM50 (Process Overview) to check for any running jobs related
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_CDOP_CA045 & is already scheduled
What causes this issue?  You have attempted to reexecute the activity which is already scheduled on the defined systems.System Response  It is not pos...
CNV_CDOP_CA044 Activity & has started in system & on & at &
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CDOP_CA047 No systems found where statistics collection is active
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CDOP_CA048 Activity not found
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.