Is Advanced Passenger Information compulsory?

Related questions

1. What information is needed for API?
2. What is a good API design?
3. What is an API and REST API?
4. What is difference between REST API and RESTful API?
5. What is a good API?
6. What is an API simple explanation?
7. Why do we use REST API?
8. Is rest an API?
9. What is REST API and JSON?
10. What is the difference between REST API and SOAP API?

Tags

1. #about
2. #known
3. #passenger
4. #states
5. #questions
6. #security
7. #passengers
8. #countries
9. #details
10. #airlines
11. #before
12. #contact
13. #member
14. #requirements
15. #require
16. #information
17. #other
18. #airline
19. #their
20. #advance
21. #reasons
22. #travel
23. #provide