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Xjszabo2022, first and foremost, I want to commend you for your interest in Wikipedia -- we are always in need of more volunteers! I placed maintenance tags on this article because there are a number of issues that need to be addressed:
All claims on Wikipedia need to be substantiated by inline citations to reliable sources (see WP:V). Can you please add citations to this article?
The article needs to provide more context to explain what "NA/UN" numbers are and to explain why exceptions are significant. You may also want to consider whether it is more helpful to readers to integrate this information into the UN number article (see WP:PAGEDECIDE).
Per WP:LISTN and WP:GNG, we generally only have standalone articles or lists for topics when that topic has been the subject of substantial coverage by independent, reliable sources. If the topic of NA/UN number exceptions does not satisfy WP:GNG, then we should probably integrate this material into another article.
Make sure that the format of the article complies with WP:MOS, and please be sure to add relevant categories to the article.
Please feel free to contact me if you have any questions. I am also tagging KGirlTrucker81, who also added maintenance tags to this article. Best, -- Notecardforfree (talk) 21:22, 7 November 2016 (UTC)[reply]