126.96.36.199 PidTagSchedulePlusFreeBusyEntryId Property
Type: PtypBinary ([MS-OXCDATA] section 2.11.1)
The PidTagSchedulePlusFreeBusyEntryId property ([MS-OXPROPS] section 2.975) specifies the EntryID of the folder named SCHEDULE+ FREE BUSY, which is under the non-interpersonal messaging subtree of the public folders.
This property is not stored on any object but is computed on demand from the folder ID (FID) of the SCHEDULE+ FREE BUSY folder. The FID, which is returned in a RopLogonROP response ([MS-OXCROPS] section 188.8.131.52), is preserved and used to compute the EntryID when it is needed.