Reporting Services Server cannot connect to the DPM database. ID: 3001

I’m encountered this error message during training material preparation.
Scenario:-

• Product:- System Center Data Protection Manager 2012 R2
• SQL Server installed locally with DPM 2012 R2

Problem:-
Error ID 3001:- Reporting Services Server cannot connect to the DPM database
when configure reporting schedule.
Solution:-
1. Open http://ServerName/Reports
2. Open DPM Reports

3. Open DPM ReporterDataSource

4. Change this settings:-
Connect using
X – Credentials stored securely in the report server and enter the credential that have access to DPM Database
X – Use as Windows credentials when connecting to the data source

5. Click Test Connection and make sure the connection created successfully and click Apply
6. Re-configure DPM reporting schedule.