Only 1 out of the 2 custom fields is required for transition

[Blaj Alexandru Dragos]

Hi!

I have 2 custom fields (custom_a and custom_b) that I use to validate a transition but I don't need to have both of them set at the same time.

Ex.

If custom_a is set or custom_b is set or both of them are set the Assignee can make the transition. If not the trasition will output an error message.

My question is how can add this condition to my transition.

Thank you for your time!

[Jack Brickey]

That cannot be done out of the box. The only idea that comes to mind here would be to have two different transitions one for custom-a one for custom-b but that's not really ideal here.