A product taxonomy for the Self-Service Platform MUST include a related content prologue. A related content prologue for the Self-Service Platform MUST include a /@ type='relevance'. Value of minimum match level () is higher than the number of non-top-level facets available (); (see facet/@xml:id=''). A product taxonomy will usually have at least one top-level facet with @suppressInBrowse='true'. A product taxonomy may have at least one top-level facet with @displayHint='true'. Alternate ID must contain a text value.