Extend XML API Version Number
Current (First) Version for all Methods: 17487
The version number indicates the version of the API method.
<request method="switchvox.extensions.search" version="17487">
Significant changes to an API method, such as new required parameters or different attribute names, will result in a new version. As much as possible, we will try to limit these kinds of changes to a later version of the method so that your applications will continue to function normally until you have a chance to update them.
If you do not indicate a version number, the latest version available is used.
If you indicate a version number that does not match a version number for that method, the closest earlier version is used. This lets you use one version number across all of your requests.