@PavaniN17437160 In the cloned React SDK project, you typically do not change internal source code files; you configure it by editing the root sdk-config.json. Set serverConfig.infinityRestServerUrl to your Pegasystems URL ending with /prweb, and set serverConfig.sdkContentServerUrl to the exact URL your React app uses for the auth callback page. Update authConfig.mashupClientId and authConfig.portalClientId with the OAuth 2.0 client registration ID you created in Pega, and (if you use an Authentication Service) set the authService/uAuthService values to that service alias in the same file. Make sure the redirect URI in the Pega OAuth client registration exactly matches your sdkContentServerUrl, otherwise login will fail. Finally, confirm your Pega app is Constellation-enabled (React SDK expects Constellation/DX APIs) and then rebuild/start the SDK app.