The Submit button does not validate a required field defined in Visual Builder

Organization Name (Required - If you are an Oracle Partner, please provide the organization you are logging the idea on behalf of): Grupo Pluma

Description (Required): In Self Service Procurement – Requisition (Redwood), a Visual Builder rule sets the Distribution DFF field “Cost Center (Centro de Custo)” as Required when Destination Type = Expense (Despesa) and Item Category is NOT an Asset category.
Although the field shows the Required (*) indicator on the Distributions tab, the system still allows submitting the requisition with the field blank (no blocking validation).

Use Case and Business Need (Required): We need validation before sending the purchase requisition for approval, thus ensuring that all necessary information has been filled in.