---
layout: rule
id: GORULE:0000029
title: IEAs should be less than one year old.
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#L92
---
All IEA annotations with a date more than three years old should be filered.
IEAs between 1 and 3 years old trigger a WARNING.
IEAs less than one year old are valid.