3.1.5.1.2.1 Versioning

As detailed in section 3.1.1.1, the response MUST contain a version number and GUID representing the configuration data described in section 2.2.2. This version number and GUID MUST be compared to the locally cached information. If the GUID from the response is different than the GUID cached locally, then the response contains newer data that MUST be used instead of the locally cached data. If the response GUID and locally cached GUID are identical, but the locally cached version number is less than the response version number, then the response contains newer data that MUST be used instead of the locally cached data. If there is no locally cached data, the version number and GUID MUST be ignored.