Making a field mandatory based on another field's value

Question

I have a Jira screen I'm presently making and I need to make one field mandatory but only if a related proceeding field has a value.

i.e. If Fieldx != none then Fieldy is mandatory.

Can anyone help?

Thanks

Mike

Gianni Pucciani · Answer

@Bharadwaj Jannu the validator option works but only at creation time. What if the dependent field changes via an Edit operation?

Bharadwaj Jannu · Answer

you need to write a workflow validator like I mentioned in the link

https://answers.atlassian.com/questions/195074/entry-validation

or you refer the links posted by rambanam prasad