Can I ensure that three custom fields are unique with a validator?

[Matthew Hauer]

At a point in the workflow, I am assigning three approvers (single user pickers) to a story.

This approvers are different types; custom fields exist for 'business approver', 'manager approver', 'IT approver'.

Is there some way I can ensure that these three approvers are three different people? I don't want to create separate groups because in theory, any user could be any of the three.

[Krishnanand Nayak · Accepted solution]

You will need to use scripted validator to do this validation. We are doing a smilimar this and using Scriptrunner plugin.

There are other plugins too that could help you write a script. 

[Matthew Hauer]

Can I do it in cloud? Do you have any of the script statements you could share?

[Krishnanand Nayak]

the plugin we are using is available for cloud.  here are some examples 

https://scriptrunner.adaptavist.com/latest/jira/recipes/workflow/validators/simple-scripted-validators.html

[Nic Brough -Adaptavist-]

Whilst there is a ScriptRunner for Cloud, it can not provide validators, as the Cloud Connect framework does not (yet) support them.

There is no way to do this on Cloud as far as I can work out.  You really do need a validator, but there's no way to write one. 

The best you could do is write a post-function that adds some data to an issue to scream "this issue has duff information"