Message type: E = Error
Message class:  CNV_DMC_HC -  
Message number: 015
Message text: It is not possible to specify a table without providing a mass transfer
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_HC015 indicates that there is an issue related to the Data Migration Cockpit (DMC) when trying to specify a table without providing a mass transfer. This error typically occurs during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: The error arises when: You attempt to define a table for data migration without having a corresponding mass transfer object defined. The system requires a mass transfer object to manage the data transfer process effectively, and without it, the operation cannot proceed.
Solution: To resolve this error, you can follow these steps: Define a Mass Transfer Object: Ensure that you have created a mass transfer object that corresponds to the data you are trying to migrate. This object acts as a container for the data transfer process. Check Configuration: Verify that the configuration settings for the data migration project are correct. Ensure that all necessary parameters and objects are
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_DMC_HC014 No old Health Check results were found; reexecution of check not possible
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_HC013 Neither a Health Check Config ID nor an active check 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_HC016 No error messages in the log
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_HC017 Error when connecting to &1 RFC destination &2 for mass transfer ID &3
What causes this issue?  The SAP Landscape Transformation Replication Server system is not able to reach a  source or target system which is connected...
Click on this link to search all SAP messages.