This attribute is the back link attribute for msTSSecondaryDesktops.
cn: ms-TS-Secondary-Desktop-BL
ldapDisplayName: msTSSecondaryDesktopBL
attributeId: 1.2.840.113556.1.4.2078
attributeSyntax: 2.5.5.1
omSyntax: 127
omObjectClass: 1.3.12.2.1011.28.0.714
linkID: 2173
isSingleValued: FALSE
schemaIdGuid: 34b107af-a00a-455a-b139-dd1a1b12d8af
systemOnly: TRUE
searchFlags: 0
systemFlags: FLAG_ATTR_NOT_REPLICATED|FLAG_SCHEMA_BASE_OBJECT
Version-Specific Behavior: Implemented on Windows Server® 2008 R2 operating system and Windows Server® 8 Beta operating system.