GET Customization In-use Lists Example

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!--
GET: /qcbin/rest/domains/DOMAIN_NAME/projects/PROJECT_NAME/customization/used-lists
Accept: application/xml
 -->

<Lists>    
   <List>
        <Name>Severity</Name>
        <Id>276</Id>
        <LogicalName>hp.qc.severity</LogicalName>
        <Items>
            <Item value="1-Low" logicalName="hp.qc.severity.low"/>
            <Item value="2-Medium" logicalName="hp.qc.severity.medium"/>
            <Item value="3-High" logicalName="hp.qc.severity.high"/>
            <Item value="4-Very High" logicalName="hp.qc.severity.very-high"/>
            <Item value="5-Urgent" logicalName="hp.qc.severity.urgent"/>
        </Items>
    </List>
    …
</Lists>

GET 
Accept: application/json

{
    "lists": [
       {
            "Name": "Severity",
            "Id": 276,
            "LogicalName": "hp.qc.severity",
            "Items": [
                {
                    "logicalName": "hp.qc.severity.low",
                    "value": "1-Low"
                },
                {
                    "logicalName": "hp.qc.severity.medium",
                    "value": "2-Medium"
                },
                {
                    "logicalName": "hp.qc.severity.high",
                    "value": "3-High"
                },
                {
                    "logicalName": "hp.qc.severity.very-high",
                    "value": "4-Very High"
                },
                {
                    "logicalName": "hp.qc.severity.urgent",
                    "value": "5-Urgent"
                }
            ]
        }
               …
   ]
}