The most common reasons for not receiving responses for some of the vessels that belong to your fleets are:
- there are not enough Credits in your account for the API call to go through.
No terrestrial coverage in the area
- some of the vessels of your fleets may sail in areas with limited coverage from terrestrial AIS-receiving Stations. Consider upgrading your service to also include satellite coverage.
The actions mentioned are applicable to the following API Services:
PS02 - Vessel Positions
PS03 - Vessel Positions of a MarineTraffic Fleet
VI01 - Voyage Forecasts