JQL Query to pull User Stories and its associated Sub-tasks

[Vishnu]

I have a requirement to pull User Stories [with 'labels' as filter] and its associated Sub-tasks [again with 'labels' as filter]

Eg: I wanted to fetch the user stories with 'Labels' as 'ABC' and its associated sub-tasks [whose the 'Labels' should be 'BBB']. No need to fetch the other sub-tasks [Labels != 'BBB']

[Oday Rafeh]

@Vishnu , 

May this help  : 

project = PROJECT_KEY AND issuetype = "User Story" AND labels = "ABC" AND issueFunction in linkedIssuesOf("labels = BBB", "sub-task of")

 Replace "PROJECT_KEY" with the key of your project.

[Vishnu]

@Oday Rafeh 

I am getting this below error