Over time certain icons may become outdated and no longer meet present day demands or standards. These icons have not violated any policy, but are simply ready for some well deserved downtime. "Rest mode" disables a set's icons from appearing in the regular search results, but will keep them visible and available for purchase directly from a contributor's shop page.
To be placed in rest mode, sets must first meet certain underperforming criteria before being considered for rest mode. Uniqueness, quality, rareness, market saturation, etc. are all important factors that will be weighed. Contributors will be notified via email every time a set has been placed in rest mode.
Additionally, existing sets that are found in need of some major technical changes (such as white fill errors, or cropping mistakes) may temporarily be placed in rest mode until proper edits have been made and they're ready for republishing. If this is the case, an admin will notify the contributor with the specific request needed to be met before the set may be republished.