A preprint is a version of a scholarly paper that precedes publication in a peer-reviewed journal and acts as an early indication of research. 

Preprints reside on preprint servers, which usually cover a set of domains and allow for dissemination, laying claim to an idea, and help collect feedback prior to submission. Some preprints may get submitted and accepted for publication while other preprints may never get submitted or accepted for publication and will remain the final version of the research record. Preprints differ from Articles-in-Press in that preprints are not peer-reviewed and not accepted for publication in a journal.

Preprints are more prevalent in certain subject fields compared to others. The preprint servers selected for Scopus are the main preprint servers in the areas of Physical Sciences (arXiv and ChemRxiv) Biomedical Sciences (bioRxiv and medRxiv) and Social Sciences (SSRN, to come during the first half of 2021). Because preprints are meant to act as an early indication of research, Scopus covers preprints from 2017 onwards for all selected preprint servers, and does not include archives from earlier years.

There is no additional selection of individual preprints outside of the posting policies of the preprint servers. Documents posted on the servers that are not preprints (e.g. accepted manuscripts or published articles) will be excluded from Scopus coverage.

Scopus will consider covering additional preprint servers as they arise and become major preprint servers in relevant subject areas. 

Source: https://www.elsevier.com/solutions/scopus/how-scopus-works/content/content-policy-and-selection

You can use the video recommendations from our publishing house PC TECHNOLOGY CENTER to work with the Scopus database:

– Add Missing Document to Scopus

– How to associate Scopus ID with ORCID ID