The Centre and the Reserve Bank of India are examining a proposal to link India's Unified Payments Interface (UPI) with Singapore's Alipay to facilitate cross-border payments. If the proposal is adopted, it will allow Indians travelling overseas to make UPI payments via the Alipay+ system and vice-versa. People familiar with the matter said a final decision on the plan will be taken after weighing several factors, including data security and safeguarding IT systems.