of communications, interventions and the responsibilities of all parties involved. Each report is initially assessed, supported by the necessary documentation and assigned to the appropriate technicians, contractors or suppliers. We then monitor the progress of activities, coordinate the various parties and verify the outcome through to case closure. This model clearly distinguishes technical, contractual and operational matters, reducing delays, duplication and informal exchanges. The result is a more reliable, transparent and traceable after-sales management process that protects the developer, strengthens relationships with purchasers and ensures full control over the entire resolution process.