Write a sole-source justification that passes approval

Help me write a sole-source (or single-source) justification for a purchase. What we're buying and estimated value: [ITEM OR SERVICE, TOTAL CONTRACT VALUE, DURATION] Proposed supplier: [NAME] Why only this supplier: [e.g. "proprietary technology", "compatibility with installed equipment", "only certified source", "urgent need", "follow-on to existing work"] Evidence: [MARKET RESEARCH DONE, OTHER SUPPLIERS CONTACTED AND WHY THEY DON'T QUALIFY, TECHNICAL REQUIREMENTS] Price reasonableness: [HOW I KNOW THE PRICE IS FAIR - past prices, price lists, benchmarks, negotiated discount] Our policy or regulation: [PASTE THE ALLOWED REASONS OR THRESHOLD FROM OUR PROCUREMENT POLICY] Approvers: [WHO SIGNS] Requirements: - Tie the justification to the specific allowed reason in my policy; don't use a reason my policy doesn't list. - Show that alternatives were genuinely considered, with facts, not assertions like "no one else can do it". - Separate sole source (only one exists) from single source (we prefer one among several); be honest about which applies. - If urgency is the reason, explain why it wasn't foreseeable, since self-made urgency usually fails review. - Include the price reasonableness basis and any plan to compete it next time. - Use only facts I provide; mark gaps [ADD EVIDENCE]. Return: 1. The justification memo with headings: Requirement, Proposed supplier, Justification, Market research, Price reasonableness, Risks, Future competition plan, Approval. 2. A list of weak points an auditor might challenge, with how to strengthen each.