This document discusses understanding supply chains for GMP clearance and the requirements for GMP agreements. It provides examples of modern global supply chains that involve multiple manufacturing sites and additional entities like distributors. Key points are that GMP agreements must clearly outline the roles and responsibilities of each party, cover all relevant products and manufacturing steps, and be signed by all parties. During GMP clearance assessment, the agreement will be checked to ensure it meets these criteria and addresses critical quality aspects, post-market responsibilities, and other important details.