...
- & needs to be replaced with &
backupServerUrl
For some imports, backup server urls can be configured in case the server configured in the serverUrl is down. The import will first try to get data from the serverUrl and if this fails will successively try the backupServerUrls until data is retrieved. Note that not all imports offer this functionality. An error message will be logged if this element is configured for an import which does not support it.
...