Dear @elenipoliti,
Thank you for asking. I agree with Mircea. You might confuse other N-nitroso compounds (ex. N-nitroso-indoles) with nitrosamines. The EMA separated other N-nitroso compounds from nitrosamines in the document. They are not considered nitrosamines because they have different characteristics from nitrosamines. The following thread helps you understand the key points.
Yosuke