Failed to extend the Active Directory schema for SCCM 2012 SP1

Hello Readers, I have recently been working with SCCM 2012 SP1 deployment and ran into the following error when extending the Schema for SCCM. <12-18-2013 16:03:46> Modifying Active Directory Schema – with SMS extensions. <12-18-2013 16:03:46> DS Root:CN=Schema,CN=Configuration,DC=BOA,DC=CO,DC=IN <12-18-2013 16:03:46> Failed to create attribute cn=MS-SMS-Site-Code.  Error code = 8224. <12-18-2013 16:03:46> Failed to create attribute…