What documents need to be carried at the airport?

Documents to be carried at the airport:
1. A printed copy of your ETA approval letter issued by the Sri Lanka Department of Immigration and Emigration.
2. Your passport with at least six months validity from the date of entry into Sri Lanka.
3. A return ticket or proof of onward travel from Sri Lanka.
4. Applicants of the below nationalities need to submit a yellow fever vaccination certificate on arrival in Sri Lanka in order to comply with international health regulations: Angola, Argentina, Benin, Bolivia, Brazil, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Colombia, Ecuador, Equatorial Guinea, Ethiopia, French Guiana, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Panama, Peru, Rwanda, Sao Tome And Principe, Senegal, Sierra Leone, Somalia, Sudan, Suriname, Tanzania, Togo, Uganda, Venezuela, Zaire.