Only diplomatic efforts can save Australians Myuran Sukumaran and Andrew Chan from the firing squad in Indonesia, after their bid for a judicial review was rejected.
The review, known as a PK, was a last-ditch effort to save the Bali Nine ringleaders, after President Joko Widodo denied them clemency for their 2005 heroin smuggling attempt.
They could be killed within a fortnight.
Their application argued past legal errors and asked that their rehabilitation over the past decade be considered.
Denpasar District Court spokesman Hasoloan Sianturi on Wednesday said this didn't fulfil the requirements for a PK, namely, new evidence.
"The reason a second PK was requested can be summed up as this: that the judges in the first judicial review were mistaken, or committed obvious mistakes because they made a sentence contradicting their own considerations," he told reporters.
"The second PK could not fulfil the formal requirements."
Indonesian authorities continued planning for the execution of Chan, Sukumaran and others even while the application was before the courts.
Attorney-General HM Prasetyo on Wednesday told reporters some embassies had been notified their citizens would soon be executed, but he couldn't recall which ones.
He has already confirmed Chan and Sukumaran will be among the next prisoners killed.
"We will find the right time," he said.
"Maybe within two weeks."
The likely location for the executions is Nusakambangan, a lonely prison island off central Java.
Prime Minister Tony Abbott had previously promised diplomatic efforts would continue for the "well and truly reformed" men.
"The government is continuing its strenuous efforts to prevent the sentences being carried out," a spokesperson from the prime minister's office said after the court's decision on Wednesday.
The president, meanwhile, is maintaining his uncompromising stance.
Addressing the National Narcotics Board (BNN) in Jakarta on Wednesday, he said he had conveyed to heads of state the findings that every day, up to 50 Indonesians die because of drugs.
Seventy per cent of Indonesia's prisoners were incarcerated for drugs offences, so there should be "no more tolerance".
"I said there is no mercy for drugs," Mr Joko said, as quoted by BeritaSatu news.
"If we give mercy it's a big loss."
The application for the PK included handwritten appeals from Chan and Sukumaran to Mr Joko, detailing the lessons they had learned while in prison, and their efforts to help rehabilitate others.
Their lawyers had argued for their death sentences to be commuted to 20 years' jail.
