A scoping review is:
Characterised as a broad-brush approach to finding the most notable studies in the field, with minimal attempts to evaluate them for quality, a rudimentary attempt at synthesis (perhaps through listing, tabulation or mapping), and an analysis that caricatures the quantity and distribution of the literature.
A scoping review can be defined as:
A type of review that has as its primary objective the identification of the size and quality of research in a topic area in order to inform the subsequent conduct of a review.