---
title: Dot Walking To sys_id – UI Policy scriptTrue
description: "Impact Area Performance Severity Medium Affected Element UI Policy ## Rule ID **SN-0379** ## Impact The value of a reference field is a sys_id. When you dot-walk to the sys_id, the system does an additional database query to retrieve the…"
url: "https://community-staging.qualityclouds.com/qcdocs/qc/servicenow-rules/dot-walking-to-sys_id-ui-policy-scripttrue/"
updated: "2025-03-21"
category: Rules
---

# Dot Walking To sys_id – UI Policy scriptTrue

Impact Area

Performance

           Severity

Medium

           Affected Element

UI Policy

## Rule ID

**SN-0379**

## Impact

The value of a reference field is a sys_id. When you dot-walk to the sys_id, the system does an additional database query to retrieve the referenced record, then retrieves the sys_id. This can lead to performance issues.

## Remediation

Avoid dot walking to sys_id, instead call the field as normal.

### Time to fix

10 min

## Code examples

### Noncompliant code

It is not necessary to include the sys_id of a reference field when dot-walking, as in the following example: var id = current.caller_id.sys_id; // Wrong

### Compliant code

The value of a reference field is a sys_id. When you dot-walk to the sys_id, the system does an additional database query to retrieve the caller_id record, then retrieves the sys_id. This can lead to performance issues. Instead, use the statement. var id = current.getValue(‘caller_id’); // Right