Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 615
Message text: No documentation available
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 CNV20200615 No documentation available typically arises in the context of data migration or conversion processes, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or other related tools.
Cause: Missing Documentation: The error indicates that there is no documentation available for a specific migration object or process. This could be due to: The migration object not being properly defined or configured. The documentation not being included in the migration package. A potential issue with the version of the migration tool being used.
Configuration Issues: There may be configuration issues in the migration cockpit or the specific migration project that prevent the documentation from being accessed. System Version: The error may also occur if the system version does not support the specific migration object or if there are compatibility issues.
Solution: Check Migration Object: Verify that the migration object you are working with is correctly defined and that all necessary
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV20200614 An error occured while writing to the Database
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20200613 Company Code &1 is taken preferred
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV20200616 Changes of data detected; see long text
What causes this issue?  Data that affects special priority handling has changed since the activity <ZK>Special Priority Handling</> was e...
CNV20200617 Table &1 is excluded from the conversion; see long text
What causes this issue?  Table &v1& is excluded from the conversion. The system deletes the special priority settings for this table, and uses...
Click on this link to search all SAP messages.