Message type: E = Error
Message class:  CNV_DMC_VM - S/4 Migration: Texts for View Management 
Message number: 001
Message text: A view with ident &1 already exists
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 CNV_DMC_VM001 indicates that there is an attempt to create a view in the database that already exists. This error typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit or similar tools.
Cause: The error is caused by the following scenarios: Duplicate View Creation: The system is trying to create a database view with an identifier (name) that already exists in the database. Previous Migration Attempts: If a previous migration or data load process was interrupted or failed, it might have left behind some database objects, including views.
Configuration Issues: Incorrect configuration or settings in the migration tool may lead to attempts to create views that are already present.
Solution: To resolve the error, you can take the following steps: Check Existing Views: Use transaction code SE11 (Data Dictionary) or SE14 (Database Utility) to check if the view with the specified identifier already exists. If it does exist and is
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_DMC_UTIL_API005 RFC destination &MV_MSGV1&: No authorisation to get details for object &2
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_DMC_UTIL_API004 RFC destination &1: System error: &2&3&4
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_DMC_VM002 No view ident was specified
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_DMC_VM003 No view name was specified
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.