Reveal the real reason why Indonesia form e certificate of o

There are lots of troubles when the invoice goods arrive in Indonesia. It's really a wave of ups and downs. A lot of things happened in the process, especially the form e certificate of origin, which makes me cry now. Since we could not apply for form e certificate of origin, we asked an agent to provide it. The agent said that the title of all customs clearance materials exported to Indonesia should be made with the form e certificate of origin title. Later, our bill of lading title was changed to form e certificate of origin company. We still need to supervise the shipment of our goods. Now the ship has left, our agent said Indonesian form E certificate of origin can not come out, this is not doing us? Now I really don't know what to do, consult several agents online, they don't accept form e in Indonesia, I want to know why Indonesia form e certificate of origin is so difficult to do?