Do Indonesia passport holders need a visa to visit GW?

Indonesian ordinary passport holders need a visa for Guinea-Bissau. A visa on arrival is available at Osvaldo Vieira International Airport (Bissau) for stays up to 90 days, but it requires a prior approval/authorization letter from the Guinea-Bissau Migration Office. A safer pre-travel alternative is the biometric eVisa applied for online before departure. A yellow fever vaccination certificate and a passport valid at least 6 months are mandatory. Guinea-Bissau is not in the Schengen area and has no visa-waiver arrangement with Indonesia, so Indonesian ordinary passport holders require a visa. Indonesia is not among the 14 visa-exempt West African (ECOWAS/CPLP) states. As a non-exempt nationality, an Indonesian can obtain a visa on arrival valid for a stay of up to 90 days, or apply at a Guinea-Bissau consulate in advance. In practice the visa on arrival is unreliable on its own: the Migration Office (Serviço de Migração e Fronteiras) generally expects travelers to hold a pre-arranged authorization/approval letter, and an online biometric eVisa (single entry, up to 90 days) is now the recommended pre-travel route to avoid being refused boarding or turned back. Core requirements are a passport with at least 6 months validity, a yellow fever vaccination certificate (Guinea-Bissau is a yellow-fever endemic country and the certificate is checked on entry), proof of onward/return travel, accommodation details and proof of funds. Because the visa on arrival channel is conditional and sources advise securing approval before travel, conservative travelers should treat this as a visa-required route and arrange the eVisa or consular visa ahead of time.