Error: 40660, Severity: 16, Could not successfully restore database. This request has been assigned a tracing ID of ‘%.*ls’. Provide this tracing ID to customer support when you need assistance.

Error: 40661, Severity: 16, Restore has been cancelled by a system administrator.
Error: 40662, Severity: 16, An internal error was encountered when processing the restore request. This request has been assigned a tracing ID of ‘%.*ls’. Provide this tracing ID to customer support when you need assistance.
Error: 40663, Severity: 16, Database ‘%.*ls’ is currently being restored and cannot be dropped. Please wait for restore to complete.
Error: 40664, Severity: 16, Database ‘master’ cannot be copied.
Error: 40665, Severity: 16, ‘%.*ls’ is not a supported collation.

Error: 40666, Severity: 16, ‘%.*ls’ is a unicode-only collation and cannot be a default collation for a database.
Error: 40667, Severity: 15, Specifying a LOGIN is not allowed in a federation member.
Error: 40668, Severity: 16, ‘%.*ls’ is not a valid user name or you do not have permission.
Error: 40701, Severity: 16, XML format used for specifying rules is invalid. %.*ls.
Error: 40702, Severity: 16, Failed to parse XML rules.

Error: 40703, Severity: 16, Invalid attribute name ‘%.*ls’ in %.*ls.
Error: 40704, Severity: 16, Invalid element name ‘%.*ls’ in %.*ls.
Error: 40705, Severity: 16, Invalid Feature type ‘%.*ls’ in %.*ls.
Error: 40706, Severity: 16, Feature name ‘%.*ls’ does not exist.
Error: 40707, Severity: 16, Invalid index value ‘%.*ls’ in %.*ls.
Error: 40708, Severity: 16, Invalid param count ‘%.*ls’ in %.*ls.
Error: 40709, Severity: 16, operator attribute is missing in %.*ls.
Error: 40711, Severity: 16, Rule name ‘%.*ls’ does not exist.
Error: 40712, Severity: 16, Invalid usage of %.*ls.

This is applicable on below versions of SQL Server

SQL Server 2005
SQL Server 2008 R2
SQL Server 2012
SQL Server 2014

Hope this was helpful.

Thanks,
SQLServerF1 Team
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