Using Workflow 'Regular Expression Check' Validator to Restrict Text Field in Number Format

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Comma(s) will be automatically added for every 3 digits in NUMBER FIELD. This is not making sense if we use number field for Phone Number, Postcode and etc. A suggestion ticket was raised to improve this at JRA-7582.



  1. Create the custom field (eg: Phone Number) in *Text Field (Single Line)* and add them to the corresponding screens
  2. Use Workflow's validator to make sure only numbers can be entered for these fields
    1. Go to Project Setting > Workflows
    2. Edit the workflow for the affected issue type
    3. Switch to Diagram mode
    4. On Create transition, click on the Validators
    5. Choose Add Validator > Regular Expression Check
      1. Field to validate: <Field created in Step 1>
      2. Regular expression:


        Regular Expression for Other Scenarios

        If you would like to restrict the field to a specific length: 


        If you would like to allow it to empty:


        If the field is required:


        n refers to the maximum number of the length

        m refers to the minimum number of the length

Alternative Solution

For customers who don't have the JSU - Suite Utilities for Jira installed, the plugin Unique Regex Custom Field provides a free alternative which allows you to create custom fields with a build-in regular expression check.

Last modified on Sep 3, 2019

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