Where the competent authorities of the candidate’s country of origin or establishment do not issue supporting documents equivalent to those mentioned in articles R. 2143-6 to R. 2143-9 or where these do not mention all the grounds for exclusion from the award procedure, they may be replaced by a declaration on oath or, in countries where there is no such procedure, by a solemn declaration made by the interested party before a judicial or administrative authority, a notary or a qualified professional body in his country of origin or establishment.