Need to Prevent the Ability to add commitment (sub-task) to an Epic that has an existing Commitment

[Saravanan Ravikumar]

Hi,

Scenario -

When there is a Issue type called epic and the sub-task called Commitment

Given there is an Epic with a 'Commitment' in "Committed" or "Met" status
When I want to add another 'Commitment' (sub-task) to the Epic
Then I should NOT be permitted to do so

Given there is an Epic with a 'Commitment' in "Not Met" or "Withdrawnt" status
When I want to add another 'Commitment' to the Epic
Then I should be permitted to do so

I tried to achieve it using behavior but failed.

How to handle this? please guide me on this

Regards

[Saravanan Ravikumar]

Can anyone help on this.