Field help: (2021) Is the father of the child officially ascertainable? This text refers to the Online Steuererklärung 2021. You can find the version for the Steuererklärung 2024 at: (2024): Is the father of the child officially ascertainable? Select "Yes" if the father of the child can be officially identified.The father is not officially identifiable if, for example, the mother does not disclose the father's name.