The following are general recommendations for troubleshooting solution import errors:
Use Help Link/Button
Solution import errors will typically include a help link or button. If you click the help link or button, you will be directed to a help article focused on that error code if one exists.
Download Log File
Some solution import errors will include a Download Log File button. You can use this option and open the file in Microsoft Excel to view additional details that may help you resolve the issue.
Try the Import Again
Some errors may be the result of a temporary issue. If you have not already, try the import again.
Community and Support
You can also use the information in the error message to search for potential solutions in the Dynamics 365 Communities. If the error persists and you are not able to resolve the issue using the details available in the error, you can contact Microsoft Support for assistance.