Message type: E = Error
Message class:  CNV_10020 - Message class for package 10020 
Message number: 618
Message text: No cluster data for &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.
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_10020618 No cluster data for &1 &2 typically occurs during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system is unable to find the necessary cluster data for the specified object or entity.
Cause: Missing Data: The most common cause is that the required cluster data for the specified object (indicated by &1) and the specific key or identifier (indicated by &2) is not present in the source system. Incorrect Configuration: There may be an issue with the configuration of the migration process, leading to the system not being able to access the required data. Data Inconsistency: There could be inconsistencies in the data that prevent the migration tool from retrieving the necessary cluster data. Authorization Issues: Sometimes, the user executing the migration may not have the necessary authorizations to access the required data.
Solution: Check Source Data: Verify that
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_10020616 Do not maintain the values for determination object &1 here
What causes this issue?  The blended package provides a separate maintenance view for maintaining the relevant values for target determination object ...
CNV_10020615 Do not maintain the values for determination object &1 (HQPack &2) here
What causes this issue?  The blended package provides a separate maintenance view for maintaining the relevant values for the target determination obj...
CNV_10020619 No scan result for &1 &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_10020620 All cluster-IDs are available
What causes this issue?  Each record in the scan table contains an upper border. It is the maximum source determination value that is handled by this ...
Click on this link to search all SAP messages.