For applications requiring a license in Parallels Plesk Panel (PPP) and Small Business Panel (PSBP), license requirements defined in APP-META.xml should include type attribute in the following format: “urn:pla:<product-alias>:<license-version>”.
Here is an example where this data needs to go in the full package metadata:
<application ...>
...
<service ...>
...
<requirements ...>
...
<l:license type="urn:pla:pinnacle-cart:1" ...>
...
</license>
...
</requirements>
...
</service>
...
</application>