title LOCALDB_ERROR_UNKNOWN_ERROR_CODE | Microsoft Docs ms.custom ms.date 03/04/2017 ms.prod sql-server-2016 ms.reviewer ms.suite ms.technology docset-sql-devref ms.tgt_pltfrm ms.topic reference ms.assetid 8f8472b6-e6fc-44f3-82c7-25f127461fa8 caps.latest.revision 8 author JennieHubbard ms.author jhubbard manager jhubbard LOCALDB_ERROR_UNKNOWN_ERROR_CODE Details Product Name SQL Server Event ID 272 Event Source SQL Server Local Database Runtime 12.0 Component Local Database Runtime API Message Text Error getting the localized error message. The specified error code is unknown. Explanation The requested error code is unknown. User Action Check if the specified error code is correct.