3.1.5.27.1.1.2 AnchorId
Type: CSOM GUID
Accessibility: Read/Write
Specifies the GUID of the anchor Term (section 3.1.5.16) object for a TaxonomyField (section 3.1.5.27) object.
An anchor Term is the Term in the hierarchical TermStore (section 3.1.5.23) that serves as the root node of the Term objects that are permissible for the current TaxonomyField object.