All research articles require the addition of English metadata. Abstracting & Indexing services (Scopus, Web of Science, ERIH Plus, ...) may reject a journal for their program, or even remove an already indexed journal from their list, if in case these metadata are lacking.

For the online version of an article this is the minimal requirement: 

1. One abstract with a string of keywords in English, regardless the language of the article. This must be available in the full-text PDF too.
2. A title or translated title in English, regardless the language of the article. The English language article title can be displayed before the paywall only; not necessarily in the full-text PDF. Since an English abstract and keywords are enforced it may be easier to include it in the PDF too.
3. Author affiliation, with the author's academic title, their position within their institution and at least their department and/or faculty, institution name, city* and country in English language. The institution name may remain in the original language. Example: Faculty of History, Campus Den Haag, Universiteit van Leiden, Leiden, The Netherlands
4. The author's ORCID.
5. Contact details (an e-mail address is the minimum requirement; in some countries fax is still customary) 
6. Received and accepted dates; published online date. 

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Ad 2) JMRH has some good examples for this: Journal of Modern Russian History and Historiography Volume 15 Issue 1 (2022) (brill.com). In the case of JMRH, some PDF articles contain a full Russian-language page with the title, abstract and keywords, followed by a full English-language page with the same information. See also Rural China Volume 19 Issue 2 (2022) (brill.com) for good examples in Chinese and English. 

Do note that both (1) and (2) also apply for articles in European languages in Latin script such as French, German, Italian, Dutch et cetera. This would require a change of editorial policy (instructions for authors) for Simone de Beauvoir Studies | Brill, for instance.

Ad 4) It has become increasingly important for Scopus to include editor and author ORCIDs. Until now, Brill does not require ORCIDs for the online version of the article. Nonetheless, we encourage authors who do not currently have an ORCID to obtain one.

Ad 5) Occasionally, authors add their personal website in the copy. This format (PDF) is okay: reuten@uva.nl; http://reuten.eu Coded in the JATS: 

<email xlink:href="mailto:reuten@uva.nl">reuten@uva.nl</email>
<ext-link ext-link-type="url" xlink:href="http://reuten.eu">http://reuten.eu</ext-link>

Please do not tag this as part of the affiliation.

Ad 6) For JATS coding, see on Article dates in XML and PDF (brill.com). PDF: see p. 81 (18.2B) of BTS 2.2 though the date format shall not be American henceforth (example: 26 June 2023). 

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