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title: "Field support"
canonical: "https://support.appfire.com/space/PSJC/792232855/Field%20support"
format: markdown
---
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> This page covers which fields work with Power Scripts in Jira Product Discovery projects.

The following fields work with Power Scripts in Product Discovery projects:

|  |  |
| --- | --- |
| **Standard fieds** | Standard Jira fields work normally when present in Product Discovery projects, including Summary, Description, Assignee, and others. For a complete list of supported standard fields, see [this page](https://appfire.atlassian.net/wiki/spaces/PSJC/pages/434962565). |
| **Custom fields** | Most Product Discovery custom fields work with SIL code like any other custom field. These include fields like Category, Customer segments, Documents, Goal, and others discovered by the [Custom fields support SIL script](https://appfire.atlassian.net/wiki/spaces/PSJC/pages/793280566). |
| **Date fields** | Use the [JPDInterval SIL type](https://appfire.atlassian.net/wiki/spaces/PSJC/pages/435028065/Predefined+structure+types+reference#Jira-Product-Discovery-types) to manipulate custom date type fields, such as Project start and Project target. |

## Unsupported fields

The following fields return null values from the REST API and cannot be accessed through Power Scripts:

- Delivery progress
- Delivery status
- Insights

> ℹ️ Some Product Discovery fields use ranking-style values (similar to 5-star ratings) that may require special handling in your scripts. If you need to work with ranking-style fields, use the [Custom fields support SIL script](https://appfire.atlassian.net/wiki/spaces/PSJC/pages/793280566) to discover the current field IDs and test accessibility.