Office 365 Roadmap | Improvements in reporting of ‘bad items’ during mailbox migrations

We are improving migrations so that the admin will no longer be required to specify an explicit Bad Item Limit or Missing Item limit. Instead, a migration will be assigned a Data Consistency Score that will classify it as – Perfect, Good, Investigate or Poor. These classifications are based on the nature and amount of data loss that might have occurred during the migration process. Based on these scores the admin may be required to take an additional step to approve a migration before it can be completed successfully. With the introduction of Data Consistency Score, we aim to increase visibility into conversion errors and help triage the criticality of item conversion failures.




https://www.microsoft.com/microsoft-365/roadmap?featureid=46690