---
layout: rule
id: GORULE:0000058
title: "Object extensions should conform to the extensions-patterns.yaml file in metadata"
type: repair
fail_mode: hard
status: proposed
tags: [context-import]
contact: "go-quality@lists.stanford.edu"
---
In the go-site/metadata directory there is a file `extensions-constraints.yaml`. This is
a list of allowed extension Relation, Filler (the ID inside the parentheses), and
the acceptable GO Term roots used with this relation. A cardinality constraint may also be
applied.

Extensions in annotations should conform to these constraints. If an element of a
disjunction in the extensions does not follow one of the constraints as listed in
the above file, that element should be dropped from the extensions.