---
schema_version: "1"
id: e4fbec62900c0490ed53b24f517eb5d1d513795b6b85891e70af41a8c5fdc945
title: Modify Change Risk Assessment Logic for IT Services
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/service/264-0-0/it_srvcs_chng_mgmt_cstmiz_decision_table.md
canonical_url: https://help.salesforce.com/s/articleView?id=service.it_srvcs_chng_mgmt_cstmiz_decision_table.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: c55974bff414c50dc70ac962121098eb7771204aecf8a0140984b70d030c84a8
description: Modify the decision table or the expression set to align the automated risk calculation with your organization’s specific needs. The decision table maps the normalized 1–100 score to a risk level.
products:
  - Service Cloud
  - Agentforce IT Service
release: "264"
---
# Modify Change Risk Assessment Logic for IT Services

Modify the decision table or the expression set to align the automated risk calculation with your organization’s specific needs. The decision table maps the normalized 1–100 score to a risk level.

### Required Editions

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small edition"><colgroup><col></colgroup><tbody><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: Lightning Experience</td></tr><tr class=""><td class="slds-cell-wrap" style="vertical-align:top;">Available in: <strong>Enterprise</strong>, <strong>Performance</strong>, and <strong>Unlimited</strong> Editions with Agentforce IT Service.</td></tr></tbody></table>

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small permission">
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            <th scope="colgroup" class="slds-cell-wrap" colspan="2" style="text-align:center;vertical-align:top;" id="d76434e72">User Permissions Needed</th>
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            <td data-label="User Permissions Needed" class="slds-cell-wrap" style="vertical-align:top;" headers="d76434e72 ">To access Business Rule Engine:</td>

            <td class="slds-cell-wrap" style="vertical-align:top;" headers="d76434e72 ">Rule Engine Designer and Rule Engine Runtime</td>

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## Edit Decision Table

A decision table provides multiple matching outcomes for the same set of inputs. Decision tables read rules from Salesforce objects and support different operators for each field in the object.

1. From App Launcher, search for and select **Business Rules Engine**.
2. Go to the lookup tables tab, select the decision table **Calculate Risk Score for Change Requests** tab.
3. Click **Deactivate** to complete the process.
4. Edit the columns Risk Value, Attribute, Risk Answer, and Weight to change the values of the predefined decision table.
5. Save your changes and activate the decision table.
6. You can upload your own Decision Table as well using the option **Upload CSV**.

## Edit Expression Set

An expression set is a series of rules you create with expression set elements. Each element in a set forms a logical step that runs sequentially. Expression sets evaluate conditions, perform mathematical operations, look up decision tables and matrices, and perform multiple transformations simultaneously. You can add expression sets to workflows created with Flow, Omnistudio, and third-party tools.

1. From App Launcher, search for and select **Business Rules Engine**.
2. Go to the **Expression Set** tab and click **Change Request Risk Score Expression Set**.
3. Click on the version name to open the expression set in the builder and make changes as required.
4. Save your changes.

To know more about the Business Rules Engine that drives change risk assessment, see [Business Rules Engine](https://help.salesforce.com/s/articleView?id=release-notes.rn_business_rules_engine_intro.htm&release=256&type=5&language=en_US).