The document discusses procedures for amending humanitarian aid agreements between partners and the Directorate-General for European Civil Protection and Humanitarian Aid Operations (DG ECHO). It describes different amendment methods including unilateral modifications by the partner, exchanges of letters between the partner and DG ECHO, and supplementary agreements. It also covers procedures for suspending agreements due to force majeure events and resuming suspended agreements. Key details include what elements of agreements can and cannot be amended and the required processes for informing and obtaining approval from DG ECHO for different types of amendments.