Defence counsel Esra Karokaro told the AFP news agency that the sentence was "excessive" and that Sandiford's sister has been asking him "about the legal procedures required to file an appeal".
Inside the Bali prison where British woman Lindsay Sandiford is being held after being sentenced to death for drug trafficking.
The Government said it strongly objects to the death penalty imposed today on a British woman who trafficked drugs into Indonesia.
The judge appears to have rejected any calls for leniency for Lindsay Sandiford. Execution is by firing squad in a jungle clearing.