Message type: E = Error
Message class:  CNV_CMIS_A_20 - Message class for Cross-Client Customizing Comparison (SLO) 
Message number: 077
Message text: Data Downloaded at &1
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_CMIS_A_20077, which states "Data Downloaded at &1," typically occurs in the context of data migration or data transfer processes, particularly when using the SAP Conversion and Migration tools. This message indicates that data has been successfully downloaded to a specified location or file, but it may also imply that there are issues related to the data transfer process.
Cause: Data Transfer Completion: The message indicates that the data download process has completed successfully. However, it may also be accompanied by other messages that indicate warnings or errors during the process.
Configuration Issues: There may be configuration issues in the migration settings or parameters that need to be addressed. Data Quality Issues: The data being downloaded may have quality issues that need to be resolved before it can be used effectively.
Solution: Check Logs: Review the logs generated during the data download process to identify any warnings or errors that may have occurred.
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_CMIS_A_20076 State updte failed for package &1 phase &2 activity &3
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CMIS_A_20075 Exclude Table list modified succcessfully
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CMIS_A_20078 Select atleast one entry for the operation
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV_CMIS_A_20079 Upload from File option is not available with Complete Selection.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.