How to make a customer field require validation by specified conditions?

[Cuijun Shen]

Hi

I have created a field A and two other fields of date type (e.g. date1 and date2).

I want to compare these two date fields when the ticket status transition to check if field A is mandatory or not.
For example.
if date1 >= date2, field A is mandatory, otherwise the ticket status cannot be transfer to the next status.
If date1 < date2, field A does not need to be entered and can be transferred according to the workflow.

My question is how do I set up this validation in jira? Would be great if someone can help on this scenario.

[Martin Bayer [MoroSystems, s.r.o.]]

Hi @Cuijun Shen yes it is doable but not out of the box. You need to install App like https://marketplace.atlassian.com/apps/292/jira-misc-workflow-extensions-jmwe?hosting=cloud&tab=overview (documentation - https://innovalog.atlassian.net/wiki/spaces/JMWEC/pages/1005420569/Use+cases+for+validators) or https://marketplace.atlassian.com/apps/6820/scriptrunner-for-jira?hosting=cloud&tab=overview (documentation - https://docs.adaptavist.com/sr4jc/latest/features/workflow-extensions/validators/example-validators) to be able to prepare your custom validator.