The Scopus Author Identifier distinguishes authors indexed in the Scopus database by assigning a unique number for each author and grouping all of the documents written by that author.
Author identifiers are automatically created for all authors indexed in Scopus, by programmatically matching author names with their affiliation, address, subject area, source title, dates of publication, citations and co-authors.
You need to check your Scopus profile regularly because the Scopus algorithm may incorrectly assigns publications to an author, or assigns publications by the same person to more than one identifier.
Publications may not be assigned to an author if they have insufficient or inaccurate information.