Hi @adventurebook I have the same problem as you, but I am not building any feature. Just wanted to know more and inform that you are not the only one who needs this kind of feature.
We have the similar situation in Sweden and I am working on a store that needs exactly this.Here is the information from the Swedish tax authorities (in Swedish though): https://www.skatteverket.se/omoss/varverksamhet/rapporterremissvarochskrivelser/...