Message type: E = Error
Message class:  CNV10400 - Messages for package 10400 (characteristics) 
Message number: 062
Message text: Characteristic &1 confirmed as "Cannot be Converted" on &2 at &3
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 CNV10400062 indicates that a specific characteristic (denoted by &1) has been confirmed as "Cannot be Converted" during a data migration or conversion process. This typically occurs in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion programs.
Cause: Data Incompatibility: The characteristic in question may contain data that is not compatible with the target system or format. This could be due to differences in data types, lengths, or formats between the source and target systems. Missing Mapping: There may not be a defined mapping for the characteristic in the conversion rules, leading the system to determine that it cannot convert the data. Data Quality Issues: The data itself may have quality issues, such as invalid values or formats that cannot be processed.
Configuration Issues: The configuration settings for the migration process may not be set up correctly, leading to the inability to
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV10400061 Characteristics which are set to "Cannot be Converted"
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10400060 One or more characteristics have to be checked.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10400063 In total, &1 characteristics still to be confirmed as Cannot be Converted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV10400064 Tables which are prepared for characteristics conversion
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.