If, in any recruitment year, the number of candidates either from Scheduled castes or Scheduled Tribes is less than the number of vacancies reserved for them even after exchange of reservation between the Scheduled Castes and Scheduled Tribes the remaining vacancies may be filled up by general candidates after de-reserving the vacancies in the prescribed manner, but the vacancies so de-reserved may be carried forward to subsequent three years of recruitment :
Provided that in the years following the recruitment year the normal reserved vacancies together with the vacancies carried forward shall not exceed fifty percent of the total number of vacancies of the year in which recruitment is made and the excess over fifty per cent of the reserved vacancies shall be carried forward to subsequent years of recruitment.
2[Provided further that the provisions of this section shall not apply to the reserved vacancies to be filled up by promotion on the basis of selection where such promotion is to be made–
(a) from class III posts to Class II posts;
(b) within Class II posts;
(c) from Class II posts, to Class I posts, and
(d) from posts in the lowest rung to class I] 3[Provided also that nothing in the Section shall apply to the vacancies reserved in respect of Class III and Class IV posts. II candidates are not available for filling up such reserved vacancies these remaining vacancies shall be filled up by holding fresh recruitment only from candidates belonging to the Scheduled Castes or the Scheduled Tribes, as the case may be, and sub-section (5) of Section 9 shall not apply to such vacancies.]
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