OBU has produced an OBU RAP Information Pack, it contains a mixture of information relating to many of the rules on how your RAP grade will impact on the classification of the honours degree if you pass, the timetable for submission , various checklists, the current submission fee, but most importantly in the Appendices (currently Appendix 1) you will find the Assessment Criteria.
As suggested, you are recommended to consult the latest Information Pack if you are interested in taking part in the programme and refer to it throughout your RAP preparation as appropriate should you have any queries. There are also contact details within the Pack for you should you have particularly queries that the Info Pack has not covered.
(If you are resubmitting then you will also need to look at the Resubmission Guide as it details some of the resubmission rules)