Parking in the Wohngebiet

My husband occasionally places the train track for 1,5days in the street.There is no stop ban now thanks to my a bitchy neighbor he got a parking ticket because of allegedly regular parking in the residential area.He is very rare and does not hinder footpaths nor park the road.Is the parking ticket right in order?We know the game already the son of the neighbor stands in the opposite traffic to park and drives without helmet on the way!!! torrad but on the village some can do what they want.Does anyone know?(it is about a 9 tonner)