Allotment of car park in an apartment complex

I bought an apartment in Chennai in 2015 with a cover car park allotted by the builder. The builder had been selling units from 2013 and there are few owners who bought the apartments before me didn't get car park when they got the flat initially. I understand that they were told that car park will be alloted later, but it was not done. Now the building is maintained by the flat association and the owners who didn't get car park alloted by the builder are suggesting the association to cancel the car park alloted by the builder and do a fresh allocation based on first come basis.Is this legal?