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Implementing Google UMP SDK with Unity Ads for GDPR Compliance

  Receiving a policy violation notification from Google Play Console regarding "Invalid Privacy Policy" or "Missing CMP" is a critical blocker for mobile publishers. Google now strictly enforces the use of a certified Consent Management Platform (CMP) compatible with TCF v2.2. If you initialize Unity Ads (or any ad network) before resolving the user's consent status via Google's User Messaging Platform (UMP), you are technically tracking users without permission. This leads to app rejections and potential account bans. This guide details a robust, architectural approach to strictly order your initialization logic in C#, ensuring UMP resolves fully before Unity Ads ever touches the network. The Root Cause: Race Conditions in Initialization The core issue stems from the asynchronous nature of Unity's  Start()  lifecycle and SDK initializations. In a standard implementation, developers often place  Advertisement.Initialize()  and  MobileAds.Initialize()  ...