The Central Bank of Mongolia has issued an international invitation for sealed bids to procure an integrated Payment Card Transaction Switching System (PCTSS) software package. The procurement covers end-to-end delivery, including installation and configuration, testing and commissioning for acceptance testing, support for acceptance and system integration testing, data migration from the existing switching system, staff training, documentation, and cutover support for go-live. The tender will be run under an international competitive bidding one-envelope procedure. Eligibility requirements include proven experience delivering similar solutions, at least two successfully completed contracts as main supplier within the last three years, the capability to support the software across multiple countries, and a supplier country that is not subject to international sanctions. Submissions must include technical and pricing proposals, corporate information, and warranty and support documentation, and must be sent by physical mail with a bid security as set out in the bidding documents. Questions on the bidding documents must be submitted by 10 March 2025. Bids are due by 26 March 2025 at 15:00 Ulaanbaatar time (UTC/GMT+8), with public bid opening scheduled for the same time.