Similarity Index above 30% --> Article Rejected (due to poor citation and/or poor paraphrasing, article outright rejected, NO RESUBMISSION accepted).
Similarity Index (25%-30%) --> Editorial send the result file Turnitin report to the author for improvement. The authors should revise the article carefully, add required citations, and do good paraphrasing to outsourced text. And resubmit the article by the Discussion Submission.
Similarity index Less than 25% --> Editorial send the result file Turnitin report to the author and may be accepted.