As far as the requirements of project results are concerned,
When the topic paper is published, it should be marked with the topic number, otherwise it will not be recognized as the result of this topic. Then the topic may not be finished because of the lack of this paper.
As far as the requirements of periodicals are concerned.
Different journals have different employment requirements. Some journals that only employ topic papers will be regarded as non-topic papers if the topic papers are not marked with topic numbers, and the papers submitted by authors will be directly rejected by journal editors because they have no topic numbers. Therefore, the author should not only know how to publish the subject papers, but also pay attention to the subject number.
As far as the difficulty of publishing a paper is concerned
Most journals include academic papers and non-academic papers. But the treatment they enjoy is not exactly the same. Relatively speaking, academic papers are more popular and more popular with journals. It is easier to publish thematic papers than non-thematic papers. Originally, your paper was a topic paper, which was easy to publish, but it was regarded as a non-topic paper because it was not marked with the topic number, and it lost the treatment that originally belonged to the topic paper.
Therefore, generally speaking, publishing a topic paper can only be regarded as a topic paper if it is labeled, recognized by the topic organizer and valued by the journal editor. Therefore, the author must not forget to put the title number on the subscript of the topic paper when publishing.