Trigger SC Approve Action outside SAP

Hi ,

I am using SAP SRM 7.02.

SC is created in SAP SRM system via portal.

In my landscape i have a non SAP system from where SC will be approved by managers.

This third party system would simulate approval process by mimicking UWL.

I am looking for a way to trigger SC Approve action using some FM/RFC which when called by third party system would trigger same event that is triggered by SC when approved from Portal.

Any suggestions about the RFC/FM or any class method?

Regards,

Ashish