---
title: "Workflow validators"
canonical: "https://support.appfire.com/space/JSU/12682751/Workflow%20validators"
format: markdown
---
> Macro (aura-html)

> ℹ️ This is the documentation for JSU for Jira Data Center. If you are using JSU on Jira Cloud, see our [JSU Cloud documentation](https://appfire.atlassian.net/wiki/spaces/JSUCLOUD/pages/12518578).

Validators check that the input for a field value is valid *before* the issue can be transitioned. For example, in an Approvals workflow, a value in a Budget field can be mandatory. If the validator fails, the user cannot move the issue to the next status, for example to the [Awaiting Approval] status. You can also use validators to ensure that field values are entered in the correct format using regular expressions.   


**To add a validator to your workflow rule:**

1. Create a draft version of your workflow.
2. Select your transition, then select the *Validators* tab. Existing validators for the transition are listed.
3. Select **Add Validator** to choose a validator.

JSU provides the following workflow validators:

- [Date Compare](https://appfire.atlassian.net/wiki/spaces/JSU/pages/12681590)
- [Date Expression Compare](https://appfire.atlassian.net/wiki/spaces/JSU/pages/12681698)
- [Date Window](https://appfire.atlassian.net/wiki/spaces/JSU/pages/12681652)
- [Fields Required](https://appfire.atlassian.net/wiki/spaces/JSU/pages/12681722)
- [Linked Status](https://appfire.atlassian.net/wiki/spaces/JSU/pages/12681948)
- [Regular Expression Check](https://appfire.atlassian.net/wiki/spaces/JSU/pages/12681672)

For more information on workflow validators in Jira, see Atlassian’s [Advanced Workflow Configuration](https://confluence.atlassian.com/adminjiraserver073/advanced-workflow-configuration-861253591.html) documentation.