3.1.5.2.2.1 LICENSERESPONSE.LICENSE nodes
For each LICENSE node found, the client MUST inspect the version attribute. The client MUST base64 decode the data in the LICENSE node and return the decoded data and the value in the version attribute to the higher layer so that the higher layer is aware of the license version being returned.
The higher layer is responsible for any and all usages of the return license. Discussion of this higher-layer responsibility is out of scope of this document.