To cross the Belgian state border, you have to provide a passport of a citizen of Ukraine for travelling abroad (for each family member).
If a minor child does not have the necessary document, it is allowed to enter information about minor children in the passports of one of the child's parents or legal representative.
However, you have to submit to the consular section of the Embassy of Ukraine in Belgium: (i) 2 colour photographs (passport size), (ii) the child's birth certificate and (iii) a valid Ukrainian passport for travelling abroad of the parent or legal guardian.
Loss of documents:
If you have lost your documents issued in Ukraine during your stay in Belgium or if they have expired, please contact the consular section of the relevant Ukrainian embassy or consulate at your current place of residence.
Email us, and the manager will respond to all your inquiries shortly.