Topic
Why is it not possible to add a Request Data action to a User Defined Action (UDA)?
Instructions
The Request Data action utilizes a custom .aspx form and content type. Because of this, the content type must be generated before the action is executed. Since a User Defined Action can be created at the Farm, Site Collection or Site level, there is no mechanism, within the UDA or action, to ensure that the custom content type exists at the same level as the UDA.