Message type: E = Error
Message class:  CNVA_CCD_ANA_MSG - Message Class for CNVA_CCD_ANA (CC Deletion Analysis Package 
Message number: 053
Message text: Activity is still running; cannot start the activity
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.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message CNVA_CCD_ANA_MSG053 indicates that an activity is still running, and therefore, you cannot start the same activity again. This error typically occurs in the context of data migration or data processing activities within the SAP system, particularly when using tools like SAP S/4HANA Migration Cockpit or SAP Data Services.
Cause: Concurrent Execution: The most common cause of this error is that the same activity or job is already in progress. This can happen if: A previous execution of the same activity has not yet completed. There are multiple users or processes trying to start the same activity simultaneously. Long-Running Processes: If the activity is resource-intensive or involves a large volume of data, it may take longer to complete, leading to this error if another attempt is made to start it. System Locking: The system may have locking mechanisms in place to prevent multiple instances of the same activity from running at the same
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNVA_CCD_ANA_MSG052 Only one background job available; cannot start the activity
What causes this issue?  At least 2 free background jobs are needed to run the Company Code Deletion Downtime Analysis pacakge.System Response  The sy...
CNVA_CCD_ANA_MSG051 No free background jobs
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNVA_CCD_ANA_MSG054 PCL Package ID created in & client; being executed in & client.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNVA_CCD_ANA_MSG055 No rows were selected
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.