---
layout: rule
id: GORULE:0000042
title: "Qualifier: IKR evidence code requires a NOT qualifier"
type: filter
fail_mode: hard
status: implemented
contact: "go-quality@lists.stanford.edu"
implementations:
  - language: python
    source: https://github.com/biolink/ontobio/blob/master/ontobio/io/qc.py
---
IKR evidence code requires a NOT qualifier.