Post setup (or reconfiguration) of Azure AD Synchronization there is a prompt
Azure Active Directory is configured to use AD attribute objectGUID as the source anchor attribute. Its strongly recommended that you let Azure manage the source anchor for you. Please run the wizard again and select Configure Source Anchor.
Why should we do this?
Upgrading this from objectGUID to ms-DS-ConsistencyGUID is best practise and allows for easy recover of accidentally deleted on-premise user accounts.
Walk Through Steps
- Run the Azure AD Connector Wizard and select the Source Anchor option
- Select Configure Source Anchor
- Click ‘Configure’ to commit the settings appropriately