DD is correct for the most part. Just one thing to add that particular countries like Germany have their own preferred noise abatement profiles that they require operators to follow. These are mentioned in the the LIDO CRAR for that country which is derived from the AIP. Ideally it should be incorporated in the CCI pages for the destination but is not always the case.
So in summary.
Follow the requirements listed in the airport LIDO AOI or CCI. If none mentioned have a look in the LIDO CRAR. If still no specific noise abatement procedure mentioned, ie DXB, use the default 1000/1000 from the normal procedures. Like everything EK there is no reasonable correlation of information, you have to go hunting for it everywhere hence a lot of people don't bother and do whatever they think is best.