The section contains routines that enable users to set up "template" projects in your Jira.The section contains routines that enable users to set up "template" projects in your Jira.
You need to have administrator rights to run them and you need to take care when updating your projects.
Following simple example shows how you can mess the Jira install: you have an existing project, several issue types, and you set up a new issue type scheme which does not contain all the issue types previously in the project. The result is undefined, and most probably Jira will complain and / or will throw exceptions because the set issue type scheme routine does not migrate the existing issues with non-existent types.