Embassy has the right to ask for whatever documents they deem necessary for a particular application. Sure there is a standard list they require but can also require more.
You should choose workcation/remote worker and supply the items/documents that they require for that visa application. There are many people who own their own business who have applied and received the DTV.
that will not work. They do not unreject a decision. The OP needs to apply again with correct data. Anyway, it's not possible to change what you filled in, only send additional documents if asked for.