You can verify the certification by running the below command before, and after you add a certification or remove a certification.
./dmctl -s duganm-ampm-703-2 get ICF_TopologyManager::ICF-TopologyManager| grep .1.3.6.1.4.1.9.1.947.2.2
where. .1.3.6.1.4.1.9.1.947.2.2 is a sample OID.