What are fieldlayout and filedlayout items in a jira project

[jayanthiR]

I want to mark the custom field as required/optional in a jira project.

Adding new Fieldconfigurationscheme and assigning to the project is leads to mess. And not allowed to use ScriptRunner tool. I'm expecting to achieve this functionality using Java methods.

While analyzing the java-api I came across some general methods to mark a custom field required/Optional. But the method deals with Fieldlayout , FieldlayoutItems. Is it possible to achieve my requirement using field layout if it is possible how i could associate it with the jira projects. Share your replies & Thanks in Advance

[Nic Brough -Adaptavist-]

What do you mean by "Adding new Fieldconfigurationscheme and assigning to the project is leads to mess."?   What are you doing that "makes a mess"?