When preparing for a procurement that can only be purchased from a single source what document is required?

When preparing for a procurement that can only be purchased from a single source, a Sole Source Justification document is required. This document outlines the reasons for selecting a specific vendor, demonstrating that no other suppliers can meet the needs of the procurement. It typically includes details about the uniqueness of the product or service, market analysis, and any alternative options considered. Additionally, it may need to be approved by relevant authorities or oversight bodies within the organization.