This report shows errors for objects you have synced from your on-premises directory to the cloud. These are caused by attributes ...

This report shows errors for objects you have synced from your on-premises directory to the cloud. These are caused by attributes that are required to be unique, like UserPrincipalName and Proxy Address, being added to multiple users, groups, or contacts. To resolve the issue, ensure that the conflicting value only exists on a single object in your company. Click each error to learn more.