I am looking to create a JQL filter that uses the "Parent Link" field. When I am trying to select the "Parent Link" field it is greyed out with a error icon next to it stating "Parent Link is not applicable for the current project and/or issue type."
Does anyone know what causes this? We are using the parent link for the issues and projects I am trying to pull into this filter so not sure why the not applicable message is coming up.

UPDATE: Was able to create a filter using the "Parent Link" field by going to the advanced JQL query and typing out the filter criteria. (see screenshot below)
