This requirement usually refers to the fact that the patent application documents do not comply with the provisions of Article 20, Paragraph 2 of the Patent Law.
The specification for an invention or utility model patent application shall state the technical features of the invention or utility model and clearly and briefly describe the scope of protection claimed.
The description does not describe the technical features of the invention or utility model in detail, or the description is too vague or general, making the scope of protection unclear.