| Event Id | 1151 |
| Source | MSExchangeSRS |
| Description | Class identifier <value> (class name <object type>) has an invalid superclass <object type>. Inheritance ignored. |
| Event Information | A schema object is corrupted. The schema is a collection of properties for objects in the directory. Stop and restart the Site Replication Service. If the error persists, restore the directory database from a backup, or contact Microsoft Product Support |
| Reference Links |
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