Acting on behalf of an underaged child

What should be taken into account when acting on behalf of a minor? 

• If you are the child’s guardian, you can act on behalf of the child electronically without a separate mandate unless the e-service you are using has restricted your right to act on behalf of the child. 
• If you are not the guardian of the minor, you can only act on behalf of the minor electronically if the guardians have granted you a mandate in Suomi.fi e-Authorizations. 
• There are e-services in which you cannot act on behalf of a child electronically.