Indonesia plans to start executing death row inmates this weekend, but so far the two Australians facing the death penalty in Bali will not be among them.

Myuran Sukumaran and Andrew Chan have both been on death row since 2006 for their parts in the so-called Bali Nine's attempt to traffic heroin to Australia.

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Both men applied for presidential pardons after exhausting all other avenues of appeal.

Sukumaran has been denied a pardon, while Chan is still awaiting an answer.

Indonesian president Joko Widodo has indicated he would not give clemency for drug cases.

His attorney-general, HM Prasetyo, announced that six narcotics death row inmates would face a firing squad on Sunday but Sukumaran would not be among them.

"His clemency has been rejected, now we are waiting on the decision on the clemency request made by another man, Andrew Chan," Mr Prasetyo said.

He said because Sukumaran and Chan committed the crime together, they must be executed together, and the date of Sukumaran's execution depended on whether Chan received clemency.

Indonesia is known for its tough approach to drug offenders and the new government has been keen to show it would be no exception.

"[This is] because Indonesia has become the biggest market in south-east Asia," Mr Prasetyo said, adding that up to 50 Indonesians a day die from drugs.

"Forty-five per cent of all drugs productions is for Indonesia. That's astonishing.

"There are so many victims and most of them are young people, productive age. I'm very concerned about this."

Mr Prasetyo said he had not had any requests from Australia for leniency in the case.

"Indonesia will make no compromise with drugs syndicates and we will be consistent in our hard and firm stance," he said.

Sorry, this video has expired Professor Greg Craven says executions unacceptable

The head of a campaign to save the lives of Sukumaran and Chan said they had genuinely reformed and should not be killed.

The Mercy Campaign's spokesman, Australian Catholic University vice-chancellor Greg Craven, said the two men were worthy of clemency.

"An interesting thing about these two men is they really have reformed," he said.

"They engage in community activity, they engage in counselling activity, they try and perform charitable works.

"If you have got people who have reformed, for whatever reason, what's the point in killing them?"