Create an Attribute rule for Material
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE BusinessRule SYSTEM "standardX20.dtd">
<BusinessRule>
<ObjectID><localId>wt.businessRules.BusinessRule:10002</localId></ObjectID>
<objectContainerPath>/wt.inf.container.OrgContainer=Demo Organization/
wt.pdmlink.PDMLinkProduct=Example1TestProduct</objectContainerPath>
<key>EXAMPLE1_ATTRIBUTE_RULE</key>
<selector>ATTRIBUTE_RULE</selector>
<name>Example 1 Attribute Rule</name>
<description>Example 1 Attribute Rule</description>
<enabled>true</enabled>
<updateIfExists>true</updateIfExists>
<configs>
<config name="objectType" value="com.ptc.Part"></config>
<config name="Material" value="SET"></config>
</configs>
</BusinessRule>