“Customer PO Unique validation” checkbox

Company Settings -> Order Settings tab:

• Sales Order bucket:
  • “Customer PO Unique validation” checkbox:
    • was added to the Sale Order Validation Settings block;
    • was added next to the “Email on Sales Order is required” checkbox;
    • is unchecked by default;
    • if the checkbox is checked:
      • On the Sale Order edit form -> If the user filled not unique Customer PO for the same Customers -> “Customer P.O.# is not unique” validation message is displayed.