| Event Id | 1143 |
| Source | MSExchangeSRS |
| Description | The abstract schema class identifier <value> (class name <object type>) derives from nonabstract schema class identifier <value> (class name <object type>). This error was ignored and the inheritance was processed anyway. |
| Event Information | Abstract classes are not used by the Microsoft Exchange Server directory schema. The schema, a collection of properties for objects in the directory, was modified. If the error persists, stop and restart the Site Replication Service. If the error still persists, restore the directory database from a backup, or contact Microsoft Product Support Services. |
| Reference Links | Microsoft product: Exchange Version: 6.0 Event Source: MSExchangeSRS Event ID: 1143 |
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