Anil Ambani, who runs a business group separate from his billionaire brother Mukesh Ambani, had filed a plea with the Delhi High Court challenging the appointment of a resolution professional over a roughly 12 billion rupee ($163 million) personal guarantee that he had given to the State Bank of India for loans to his companies.
His Reliance Communications (RCom), a mobile carrier launched in 2002 with cut-price plans and is currently in insolvency.
Its heavy debt load and a string of losses exacerbated its shutdown as Mukesh Ambani's Reliance Industries in 2016 launched its Jio telecoms venture, breaking the Indian telecoms market with cheap data plans and free voice services.
Most of Anil Ambani's other companies, in sectors such as defence, entertainment and infrastructure, have also struggled.
Ambani, the joint heir to Reliance Industries, forced a split in the conglomerate after his father Dhirubhai Ambani's death in 2002.
In a 2005 deal brokered by their mother, Anil Ambani won control of the power, financial services and the newly built telecoms business, while Mukesh Ambani retained the oil and petrochemicals business.
But Anil Ambani's fortunes have ebbed since and he narrowly escaped a jail sentence last year with his elder brother coming to his rescue.
By Suchitra Mohanty