String USER_ID = 'Your user ID from REST API'.zoom/zoom-sdk-android/blob/master/mobilertc-android-studio/example2/src/main/java/us/zoom/sdkexample2/Constants.java#L21 Based on the screenshot, it seems like you are using the example2 demo app, and the error is caused by the meeting ID, could you verify if you have entered the valid meeting in: Let me know if you have any other questions. Please refer to our demo app regarding the exact implementation of how to start a meeting using tokens. If the meeting is not being scheduled by the user, the user will join the meeting instead of hosting the meeting. If the meeting is not being scheduled, you will see the “This meeting ID is not valid” error. Once you have retrieved the tokens, you can use that tokens to start a meeting if and only if an existing meeting has been successfully scheduled by the user that is associated with the tokens.After you successfully initialized the SDK, if you would like to use token & zak to start meeting, use your API key & secret (not SDK key) and follow the instruction in the documentation to retrieve your tokens.“Initialized ZoomSDK with apiKey and apiSecret” – Please ensure that you pass SDK keys & secrets to the AppKey & AppSecret(in 0118)/ SDKKey & SDKSecret(in the latest version), passing API key and secret will let to error.

How to fix invalid meeting id in zoom