Does FTA failure to ob affect customer clearance

Before looking for an agent to issue the certificate of origin of China and South Korea FTA are double headed in the first column, that is, the order of the agent company O / b our company's order, and the shipper of the bill of lading shows the title of our own formula, but now our agent said: now FTA certificate of origin can not be ob double title, our title can only be shown in the description of the goods. If the FTA certificate of origin made on behalf of the agent can not display the word ob, the shipper only shows the agent company, does it affect the customs clearance at the port of destination?