How to change the Custom Field from Default Text Renderer to Wiki Style Renderer Programmatically?

[arunk]

I wanted to Change the Active Renderer of the Custom Field to the Wiki Style Renderer programmatically.

Someone Kindly guide me to change the Renderer to Wiki Style.

[Andy Heinzer]

In my search for this question, it looks like this is not possible to do via the native REST API for Jira.  There is an existing feature request for this in https://jira.atlassian.com/browse/JRACLOUD-68213

However the Java API for Jira does appear to allow this.   I would recommend checking out @Jobin Kuruvilla [Adaptavist]'s response over on this thread: https://community.atlassian.com/t5/Jira-questions/Is-it-possible-to-set-the-field-configuration-Renderer/qaq-p/284470

Jobin wrote there:

Use FieldLayoutManager to get the EditableFieldLayout and use storeEditableFieldLayout method to store the fieldlayout after invoking setRendererType using the appropriate type.

Granted that question is in regards to a plugin for Jira, but I believe the principles are the same.