Here is a simple procedure which you can use to verify the sIDHistory and identify the corresponding source object.
Step #1 – Get the sIDHistory of the migrated Object
You can use QSQuery command to generate the sIDHistory. Here is an example. On the target domain, run the following command to get the sIDHistory value:
dsquery * -Filter "(samaccountname=santhosh)" -Attr sIDHistory
Step #2 – Compare this sIDHistory value against the source account.
When a User object migrated from one domain to another, a new SID must be generated for the user account and stored in the ObjectSID property. Before the new value is written to the property, the previous value (ObjectSID from source domain) is copied to another property of a User object, sIDHistory in the Target domain. So you can use the sIDHistory value to search the Source domain using the ObjectSID attributes to identify the corresponding user in the Source domain. In other words, the sIDHistory value will be equal to the source ObjectSID.
So in the source Domain, you can perform a custom LDAP search using sIDHistroy to identify the corresponding source object. Here is an example:
![[image[3].png]](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjf7dcUDWKIFGjcdq9Ke90a0j0u2yW1zKDtF2VmNuk8NqXS7Eb4Cb5AVab6haq-mgqM_SCyrPzFBfdirutU8Lgy2DrfmRpsCUphyphenhyphen_Qla8I14RX6-cmwxDiwoF0YGI70urJRGngDmV-KlFE/s1600/image%5B3%5D.png)
The output of this LDAP query will be the corresponding object in the source domain.
Other Related Blogs and Articles:
Active Directory Migration Using ADMT - http://www.sivarajan.com/admt.html
Computer Migration - Things to Consider - http://www.sivarajan.com/cm.html
User Account Migration and Merging Using ADMT - http://www.sivarajan.com/
ADMT Include File - http://portal.sivarajan.com/2011/06/admt-include-file.html
User Migration and Input File Format - http://portal.sivarajan.com/2010/12/user-migration-and-input-file-format.html
ObjectSID Vs sIDHistory - http://sivarajan.com/forum/viewthread.php?tid=8
Identify SID Using DSQUEY Command - http://portal.sivarajan.com/2010/06/identify-sid-using-dsquey-command.html
PowerShell Script - Search Active Directory and Generate SIDHistory Report - http://portal.sivarajan.com/2010/12/powershell-script-search-active.html
SID Filtering – Access is denied - http://portal.sivarajan.com/2009/06/sid-filtering-access-is-denied.html
ADMT SID Mapping File Generation Using DSQUERY Command - http://portal.sivarajan.com/2011/04/admt-sid-mapping-file-generation-using.html
siDHistory Report - with Multi Value Support - http://portal.sivarajan.com/2011/04/sidhistory-report-with-multi-value.html
ObjectSID and Active Directory - http://portal.sivarajan.com/2011/09/objectsid-and-active-directory.html
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