Solution: If you want to retrieve all Lead assignment rules use the package.xml given below
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>Lead</members>
<name>AssignmentRules</name>
</types>
<version>53.0</version>
</Package>
If you want to retrieve all Case assignment rules use the package.xml given below
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>Case</members>
<name>AssignmentRules</name>
</types>
<version>53.0</version>
</Package>
If you want to retrieve all assignment rules use the package.xml given below
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>*</members>
<name>AssignmentRules</name>
</types>
</Package>
If you want to retrieve specific lead assignment rule for example 'Assign To Thomson' rule
use the package.xml given below
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>Lead.Assign To Thomson</members>
<name>AssignmentRule</name>
</types>
<version>53.0</version>
</Package>
Output:
