Can I be asked for DNA testing, a copy of the fertility treatment medical records or additional documents?

No. The only documents they can request are those listed above and they cannot request additional requirements for the sake of greater certainty. According to the Constitutional Court, a registration procedure must be carried out in a simple manner; otherwise the best interests of the child, his or her right to nationality, personality and to have a family would be affected.

The National Registry of Civil Status establishes that "the affirmation made by the parents of the minor of the existence of the link will be sufficient, so that the general requirements established by law are acted upon and applied on equal terms" (Circular Única de Registro Civil e Identificación version 9).