Trend Analysis for IDoc monitoring

Hello Experts,

I have configured IDoc monitoring for my ECC system in SAP Solution Manager 7.1 SP12. I would like to know that trend analysis is available for IDoC monitoring or not. I have checked in MAI Alerting Directory Browser and there "BW Reporting" is selected.

but still when I launch trend analysis from Business Process Monitoring it throws below error

Please let me know if some one has already solution for this.

Regards,

Piyush Jain