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Based on the guidence recevied from TAC, these are my comments:
SupportOldSchema Parameter
This parameter is defined at the Microsoft_AD profile level:
Tables → Managed Objects → LDAP → Microsoft_AD → Common
Any change to this value affects all LDAP Account Units using this profile.
Recommendation: create a duplicate profile (e.g., Microsoft_AD_PwdChange) and assign it only to the LDAP Account Unit where the password expiration functionality is needed.
Global Option: “Enable Password change when a user's AD password expires”
This setting enables password-change workflows across all LDAP Account Units globally.
Only properly configured LDAP Account Units (correct profile, SSL enabled, write permissions, schema handling) will actually use the feature.
Other LDAP Account Units continue operating normally.
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