How to assign a task/issue of a service management project to a team which we created

[Kiran Kumar Bussa]

Created a project with Jira Service Management template and its the team-managed project.  My application is having 4 different integrated APIs which are managed by other teams.  Initially created a team and trying to assign an issue to that team but unbale to find out how to assign task/issue to a specific team

[Nikola Perisic]

Welcome @Kiran Kumar Bussa 

You can only assign issues to individual users. You can also include the Team custom field to your screen, since this is a team-managed you can do this through Project settings > Issue types. From there you search for Team field and add it to the issue type.

More about Teams in Jira could be found here: https://support.atlassian.com/atlassian-account/docs/using-atlassian-teams-in-jira-projects/

Also, you can set an automation rule that when a Team field is being changed, the users that are part of the group (you would have to create a group separately as well through User management this time), would receive an email.

More on the notifications could be found here: https://community.atlassian.com/t5/Jira-questions/Notifications-to-specified-Team/qaq-p/2535891