A person, who is desirous of travelling to Barbados and requires a visa, should first submit an application for processing and be granted permission to travel to Barbados PRIOR to booking and confirmation of travel.
Quoted from the source.
Before you go
The conditions that come with this rule, from its official sources.
Conditions from official sources
Get the entry visa granted before booking and confirming travel.
Complete the online Immigration and Customs (ED) form at travelform.gov.bb, which opens 72 hours before arrival, and keep the receipt to show on arrival.
Passport validity
The source states no minimum passport validity.
Tourist entry only
These rules cover tourist visits. Work, study and transit follow other rules.
The other way round
What Barbados passport holders need to visit Timor-Leste.
Barbados passport Timor-Leste
Visa on arrival · 30 days
Fee
$30.00
Maximum stay
Up to 30 days
Tourist Visas on arrival are valid for 30 days stay, and can be extended once with same period.