Field 'Lot Id' Must Be Filled In When Trying To Update Project Quotation Line

Good Day,

I am receiving the infobox "Field 'Company' must be filled in" and "Field 'Lot Id' must be filled in." when I try to update a line in a project quotation for anything other than transaction type of Item.

All required fields are set correctly as far as I can tell, can anyone point to me where this would be set.

Regards.