Nintex Forms access to External Secondary Fields
We need to get details from external Oracle database using BCS connection and show them on Nintex form.
We have created external content type which has one primary column and 4 secondary columns.
And created SharePoint column using that external content type.
On Nintex, we are able to add newly created SharePoint column but with primary column only.
How can we add other 4 secondary columns on Nintex form?
Because we can’t see other 4 columns on available SharePoint columns window in Nintex Forms.
Note : BCS connection working fine because when we save Nintex form with external SharePoint column data, we can see other 4 secondary columns data in SharePoint list view.

Thanks for your suggestion.
I will update this idea if there are any updates to share.
Cheers, Euan