JSM: How to configure comment field to become mandatory in workflow transition?

[Sola]

I have configured a blank screen for workflow transition, and add a Field has been modified Validator to make Field Comment should be modified during the transition.

But it doesn't work. Customer still can transition without any comment.

How to configure comment field to become mandatory in workflow transition?

[Jack Brickey]

Unfortunately you cannot require the Comment. Here is an old post discussing an option to use a custom field that might work for you - How-can-I-make-a-comment-required-on-transition-in-customer-portal 

[Sola]

Hi Jack,

The custom field seting in screen will not show in the customer portal. I still can't request customer leave something while transition.

But still thank you reply me.

[Jack Brickey]

Well it depends on the type of custom field. There is a post in the Community that discusses the supported types but I could not immediately locate. Too, it might be out of date.