If the authors have a question addressing the feasibility, appropriateness, meaningfulness or effectiveness of a certain treatment or practice, then a systematic review is likely the most valid approach. However, authors do not always wish to ask such single or precise questions, and may be more interested in the identification of certain characteristics/concepts in papers or studies, and in the mapping, reporting or discussion of these characteristics/concepts. In these cases, a scoping review is the better choice.
Scoping review investigates different types of questions than systematic reviews.
Scoping review have different goals than systematic review.
Patient, Problem, or Population
Intervention or Exposure
Comparison or Control