Certifying a notification with method CERTIFY_COMPLETION

Hello All Experts,

Good day to you all.

I have a requirement to certify a Notification that we create using IW21. Let me explain some previous steps that i have done.

First after creation of a notification in IW21 am completing the task of the notification using BAPI BAPI_SERVNOT_COMPLETE_TASK.

Then i complete the notification itself using BAPI BAPI_ALM_NOTIF_CLOSE.

Till this step am good and i have achieved the requirement. Now after this i need to certify this notification, for this purpose i found a method eligible to do.

The Method is CERTIFY_COMPLETION from the class CL_NOTIFICATION_WPS. When i saw this method there is no parameter maintained and am not sure how to use this method and also could not get any information on this can you please help me in achieving my requirement with this method.

Thanks In Advance.

Regards,

Satish