In general, both the child and the legal guardians (usually the mother and father) must consent to an adoption.

If the children are younger than 14 years old, only their legal guardians can give consent (usually the mother and father).

If the child is older than 14, the child must also consent to the adoption.

If a court has not yet ruled on the adoption, a child who is 14 years old or older may revoke the adoption. This is called a revocation of consent to the adoption.

This revocation is also possible if the legal guardian consented to the adoption and the child later turned 14. However, this is only possible if the adoption has not yet been finalized (i.e., a court has not yet ruled on the adoption).

The child can revoke the adoption on their own. They do not need permission to do so. The reason why the child wants to revoke the adoption is irrelevant.
A specific form is required for the revocation. The revocation must be “publicly certified.” The child can do this at a youth welfare office or at a notary’s office.
At a youth welfare office, the certification is free of charge. At a notary’s office, the certification costs money.