Opinions whereas others allow it only in very exceptional circumstances. This is a good practice that should be maintained and followed by other states, also in light of the provision at Article 4.3 of the Return Directive which allows adopting or maintaining more favourable provisions. It is namely difficult to imagine a case in which the detention of a separated or unaccompanied child simply for securing his or her removal would comply with the requirements of the Convention of the Rights of the Child (CRC). Under no circumstances should separated children be deprived of their liberty if it is not possible to ensure that they are kept in appropriate facilities where separate accommodation from adults can be guaranteed. Where legislation exceptionally allows for the deprivation of liberty of a separated child, domestic law should require appointing immediately a legal representative at no cost, unless the child already has one, in addition to an independent guardian. 11