The title of a general official document cannot be omitted. What notices can only be omitted?

No, in any case, the title of an official document must be composed of subject and language.

Grammatical structure of general official document titles. As we all know, in modern Chinese, "about" is just a preposition, which can't exist alone in a sentence. It must form an object-object phrase with the following words or phrases.

In the title of official documents, "about" plays such a grammatical role, and forms a subject-object structure with the following components, which makes the language expression of the title more prominent and conforms to the writing purpose of official documents.

The use of official document titles

Some official document titles use languages that do not conform to the provisions of the Measures, such as the Reply on Asking for Instructions on the Work Arrangements of Comrade XX, and others combine the two legal languages.

For example, the title of "Request for Instructions from XX Municipal People's Government on Solving Drought-resistant and Seed-resistant Funds and Materials" was changed from "Request for Instructions" and "Report" to a new language, which was neither fish nor fowl, and should be changed to "Request for Instructions on Solving Drought-resistant and Seed-resistant Funds and Materials".