Message type: E = Error
Message class:  CNV_MBT_09_A - Message class for drop-solution 
Message number: 206
Message text: Table & for package & should not have been in CNVMBT09TABLE
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_MBT_09_A206 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This specific error indicates that a table and package combination is not valid or expected in the context of the migration process.
Cause: The error message CNV_MBT_09_A206 can occur due to several reasons: Invalid Table/Package Combination: The table and package specified in the error message are not recognized as valid for the migration process. This could be due to a misconfiguration or an unsupported table. Data Model Changes: If the data model has changed (for example, if you are migrating from an older version of SAP to a newer one), certain tables may no longer be relevant or may have been replaced with new structures.
Configuration Issues: There may be issues with the configuration of the migration cockpit or the specific migration project you are working on.
Solution: To resolve
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_MBT_09_A205 Table & for package & cannot be dropped, set to notuse
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_MBT_09_A204 Client dependent table & for package & does not exist in CNVMBT09TABLE
What causes this issue?  There is a client dependent table in DD02L which should have been already selected by user and an entry should have been made...
CNV_MBT_09_A207 Table & for package & set as client dependent.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_MBT_09_A208 Table & for package & does not exist.
What causes this issue?  There can be instances where there are table names  in CNVMBT09TABLE which do not exist in receiver system. The table CNVMBT0...
Click on this link to search all SAP messages.