Known error

{{Short description|A software bug that has not been fixed}}

{{expert needed|1=Technology|reason=Expansion of stub|date=April 2019}}

A known error is a software bug that has not been fixed, but has a known root cause and either has little disruptive impact on the end user or a known work around.{{citation | year=2005 | title=Foundations of IT Service Management: Based on ITIL | publisher=Van Haren Publishing | isbn=978-90-77212-58-5 | page=57 }}

Tested systems are often described as "free from known errors" in recognition that complex systems cannot be proven to be error free.{{citation | last=Partridge | first=Derek | year=1992 | title=Engineering artificial intelligence software | publisher=Intellect Books | isbn=978-1-871516-06-7 | page=[https://archive.org/details/engineeringartif0000part/page/45 45] | url=https://archive.org/details/engineeringartif0000part/page/45 }}

In IT Operations known errors may be logged in a system's known error database (KEDB) which is then used to prioritize changes and to develop customer support reference information where a work around exists.{{citation | last1=Van Bon | first1=Jan | year=2008 | title=Service Strategy Based on ITIL V3: A Management Guide | last2=Pieper | first2=Mike | publisher=Van Haren Publishing | isbn=978-90-8753-124-9 | page=135 }} In the ITIL framework KEDB is a part of the Problem Management process.