I am trying to add a new field in Composer for Submission Data extract in TM.
The field is a Radio Button in the form however although in Composer the TM Data Integration is set up the Field is not visible in TM, it doe snot appear in the Data Config Fields.
Any guidance appreciated
A radio button is one component of a working radio selection mechanism, and while technically you can set data extract properties on a single radio button, in practice it doesn't make much sense to do so.
I believe what you want is to set the data extract properties on the associated radio button group, where the selection value is maintained and bound into the form data.