Message type: E = Error
Message class:  CNV_00001_DEMO - Messages for CWB demo programs 
Message number: 001
Message text: Number of tables starting with letter &1: &2
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.
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The SAP error message CNV_00001_DEMO001 is part of the SAP Conversion and Migration tools, specifically related to data migration processes. This message typically indicates that there is a count of tables that start with a specific letter, which is represented by &1, and the number of such tables is represented by &2.
Cause: The error message is informational rather than an error in the traditional sense. It is generated during a data migration or conversion process when the system is counting the number of database tables that start with a specific letter. The message is likely part of a validation or reporting process to inform the user about the state of the data migration.
Solution: Since this message is informational, there may not be a direct "solution" required unless it is part of a larger issue. However, here are some steps you can take: Review the Message Context: Check the context in which this message
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