How to fill in the ID code on the Congo gold visa?

The z code of the copy of Congo gold visa is COD-3. Materials required for Congo Golden Visa processing: 1, passport (valid for at least 6 months); 2. 2 passport photos; 3. The invitation letter must be notarized by the local notary office; 4. Round-trip air tickets and hotel orders; 5. An application form filled in French; 6. Tourist visas also need to provide proof of economic guarantee; 7. Work visas also need to provide legal work permits and business licenses, and issue international vaccination certificates; 8. To apply for short-term residence, you can apply for one or more extensions at the General Administration of Immigration with an application letter within the validity period of the tourist visa; 9. To apply for long-term residence, you need to complete the nationality certificate, work contract, official letter from the employer and work permit within the validity period of the tourist visa, and apply for a work visa at the General Administration of Immigration; 10, transit visa, you need to provide a joint ticket and a visa to the country.