MS-102 Certification Notes

Day 7.2 - Prepare for Synchronization

Remove duplicate proxyAddress and userPrincipalName attributes
Ensure that all objects to be synchronized must have valid userPrincipalName values
Remove invalid or questionable characters in object attributes
In Multi-forest deployments follow Microsoft recommendations such as: Consider consolidating forests, Use only in the primary logon forest
UPN's must be verified domains in Microsoft 365
UPN's must not contain invalid characters: \ % & * + / = ? {} | <> () ; : , [] "
IdFix is a tool to help you prepare your AD DS (on Prem) forest