How the default category can be removed in iProcurement smart form

Hi all,

How the default category can be removed in iProcurementsmart form if we need to restrict the list of category in non-catalog request.

We perform the steps which refer to the note.

How to Restrict List of Categories Shown in the Category LOV in iProcurement Non-Catalog Request? ( Doc ID 976190.1 )

Although the list of categories can be controlled in the iProcurement, unfortunately, the default category value is displayed in the new smart form, we would like to limit the user behavior, the desire category should be chosen by user preference each time. Avoid the incorrect category was chosen.

Thanks,

Vincent