Suggestion needed - i bought a plot unapproved pls advise

Dear Sir, i bought i plot 1400sq ft in an unapproved layout in dec 2020. which is in tamilnadu, tirupur dist, kangeyam taluk, kadaiyur village. i dont know the reason for not getting approved by developer. what should i do before starting construction in that plot. Pls advise. Balaji Jagadeesan.