transactions by the official sector with countries on the dac list of oda recipients which do not meet the conditions for eligibility as official development assistance the puipose codes are also commonly referred to as sector codes as they provide a classification of the sector of the activity in total there are purpose codes with mandatory and new voluntary codes which have recently been added to the crs to more easily link development activities to developing country budgets these activities are considered core sti activities as their ultimate aim are clearly focused on obtaining new knowledge through scientific studies in their respective sectors all activities reported under these codes are considered as core support to the ict sector