The phrase "existing mechanisms" refers to the systems or methods that are already in place or currently being used. It means the ways things are currently done or the available resources and processes that can be used. Full definition
Existing mechanisms for legal accountability are ill suited and inadequate to address the unlawful harm that fully autonomous weapons would be likely to cause. (stopkillerrobots.org)
A number of existing mechanisms exist that encourage climate change mitigation through conservation and restoration of natural systems. (thebluecarboninitiative.org)
Existing mechanisms of asset management and available ways of investing funds are often confined to a narrow circle of customers: these are either professional investors or people with a large fortune, serviced by professional financial advisers. (personalmoneyservice.com)