Border talks between India and China scheduled to commence Monday have been indefinitely postponed. Officials were tight lipped about the postponement but sources said that some demands by the Chinese side, which were regarded as "unacceptable" by India, led to the postponement of the 15th round of talks on the long-pending boundary problem, according to Press Trust of India news agency (PTI). Talks were expected to discuss putting in place a mechanism for border management mooted by Chinese Premier Wen Jiabao during his visit to India last year. Sovereignty over two separated pieces of territory was contested during the Sino-Indian War (1962). One is Aksai Chin is located either in the Indian province of Kashmir or the Chinese province of Xinjiang in the west. The other disputed area lies to the east is referred to as Arunachal Pradesh by India and South Tibet by China.