Microsoft Dynamics Axapta Technical,Functional Coverage

Solution on below error Problem and Error Reporting extension installation error for ax 2012 R3. Verifying the credentials for the Microsoft Dynamics AX .NET Business Connector proxy. Back up the SQL Server Reporting Services encryption key. The reporting server is not set up correctly, and cannot be configured by Setup. For information about setting up a reporting server, see SQL Server Books Online. An error occurred during setup of Reporting Services extensions. Reason: Unable to back up the SQL Server Reporting Services encryption key. The operation failed with error code 2147944645. System.InvalidOperationException: Unable to back up the SQL Server Reporting Services encryption key. The operation failed with error code 2147944645. at Microsoft.Dynamics.Setup.IdentityUpdater.<SetServiceAccount>b__2(ErrorCodes code) at Microsoft.Dynamics.Setup.IdentityUpdater.CheckHresult(Int32 hresult, Action`1 exceptionAction) at Microsoft.Dynamics.Setup.IdentityUpdater.SetServ...