25In whatever form it is given, information which is precise, unconditional and consistent and comes from authorised and reliable sources constitutes assurances capable of giving rise to such hopes. However, a person may not plead breach of that principle unless he has been given precise assurances by the administration (Case C-221/09 AJD Tuna [2011] ECR I-1655, paragraph 72 and the case-law cited).
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