Message type: E = Error
Message class:  CNV_CDMC_CA - CDMC Clearing Analysis 
Message number: 046
Message text: & is already running
You have attempted to execute an activity that is already running in the
defined systems.
It is not possible to execute activity that is already running.
You must wait until 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_CDMC_CA046 typically indicates that a conversion process is already running in the system. This error is part of the SAP Conversion Management (CDMC) tools, which are used during data migration or system conversion processes.
Cause: The error occurs when you attempt to start a conversion process that is already in progress. This can happen if: A previous conversion job has not completed yet. There is a system issue that has caused the job to hang or not terminate properly. Multiple users or processes are trying to initiate the same conversion job simultaneously.
Solution: To resolve the CNV_CDMC_CA046 error, you can take the following steps: Check Running Jobs: Use transaction code SM37 to check for any running jobs related to the conversion process. Look for jobs with the same name or related to the CDMC process. Monitor Job Status: If you find a job that is still running, you may need to wait for it to complete. If
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_CDMC_CA045 & is already scheduled
What causes this issue?  You have attempted to execute an activity that is already scheduled in the defined systems.System Response  It is not possibl...
CNV_CDMC_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_CDMC_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_CDMC_CA048 The activity has not been 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.