UCAS - Why don't all post-16 qualifications get Tariff points?

Why don't all post-16 qualifications get Tariff points?

There are many reasons that not all qualifications have Tariff points. For example:

the Tariff came into effect in 2002 so qualifications offered before then may not get Tariff points
the Tariff only includes qualifications recognised as level 3 in England, Wales and Northern Ireland (level 5/6 in Scotland) or equivalent. Courses at lower or higher levels are not included, apart from in exceptional circumstances
UCAS does not actively market the UCAS Tariff to awarding organisations. Awarding organisations make requests for UCAS to consider the inclusion of their qualifications in the Tariff
universities and colleges in the UCAS scheme may not consider particular qualifications to be suitable for entry to their higher education courses. Any level 3 qualifications that do not help students progress to higher education will not attract points
UCAS is constantly reviewing and updating the Tariff. Any qualification not currently in the Tariff, but which helps prepare students for higher education study, may be included in the future.