Identify the missing word(s) in the following sentence.

The purpose of the problem management practice is to reduce the likelihood and impact of incidents by identifying actual and potential causes of incidents and managing workarounds and known errors1. Workarounds are temporary solutions that reduce or eliminate the impact of an incident or problem for which a full resolution is not yet available2. Known errors are problems that have a documented root cause and a workaround3. References: ITIL Foundation - ITIL 4 Edition, page 15; ITIL® 4 – A Pocket Guide, page 35; ITIL® 4 Practice Guide: Problem Management, page 7.