---
layout: rule
id: GORULE:0000030
title: "Obsolete GO_REFs are not allowed"
type: report
fail_mode: soft
status: implemented
contact: "go-quality@lists.stanford.edu"
---
GO_REFs are here: https://github.com/geneontology/go-site/tree/master/metadata/gorefs.yaml
References for which is_obsolete: `true` should not be allowed as a reference (GAF column 6; GPAD column 5).