I've been sitting on a problem for quite a while and can't find a solution.
We use a Teltonika FMM001 and to test it we got another Teltonika FMC001. According to the description, both devices should return 600+ parameters.
For example we need AVL ID 353 = actual.remaining.mileage or AVL ID 135,AVL ID 60 =can.fuel.consumption.
However, I do not get both values back in the API and also not in the JSON.
We have already changed the codec to "Codec 8 Extended" as described in the blog https://flespi.com/kb/teltonika-device-data-via-api, but the data is the same, it has not become more. What am I doing wrong?