Message type: E = Error
Message class:  CNV10400 - Messages for package 10400 (characteristics) 
Message number: 004
Message text: Analysis is currently locked by user &
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 CNV10400004 indicates that an analysis is currently locked by another user. This typically occurs in the context of data migration or conversion processes, where multiple users may attempt to access or modify the same analysis or data set simultaneously.
Cause: Concurrent Access: Another user is currently working on the same analysis, which locks the data to prevent conflicts. Session Timeout: A previous session may not have been properly closed, leaving the analysis locked. System Error: Occasionally, system errors or crashes can leave a lock in place.
Solution: Identify the Locking User: Check who is currently using the analysis. You can do this by using transaction code SM12 (for lock entries) to see which user has locked the analysis. Wait for Release: If the locking user is actively working on the analysis, it may be best to wait until they finish and release the lock. Terminate the Lock: If the locking user is not available
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV10400003 New analysis was selected
What causes this issue?  New analysis was selectedSystem Response  With a new analysis, all previous analysis results are deleted after the new analys...
CNV10400002 Display function was selected
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10400005 No analysis data for package & found
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10400006 Analysis for package & is already active
What causes this issue?  A different process is already running an analysis for package &System Response  Only one analysis per package can run at...
Click on this link to search all SAP messages.