The field inherits from a multi part field (its for our billing code). If I place on the page:
<td class="form-control"> <srm:BillingCodeFieldControl ID="billingCode" runat="server" ControlMode="Edit"></srm:BillingCodeFieldControl> </td>
It does not render at all.
I have debugged it and the custom Field Control method CreateChildControls is getting called, so I am confused.
It renders just fine if I go into the list view and select "Edit Item". I'm thinking that since I have no associated List item until I submit the form, and hence no associated Field that may be the issue...