Make field Comments Mandatory when fail to certify on Data certification tasks

[Vasavi1]

we have installed Data certification plugin. When assigned to failed to certify the certification element, we want to Make comments Mandatory. And also, Not allow assigned to certify empty values of Certification elements in certification task.

[creelyu]

how to implement this within CMDB workspace. Currently the CMDB certification module is moved to workspace for Zurich version.