Note: PULL and GET terms are used interchangeably and mean the exact same thing.
Polaris asset (i.e. site) data is retrieved daily at 02:00 EST via RemoteFile domain which retrieves the specified file from the remote server (ATC FTP, refer to the PwSafe for details; file name is Errigal_Polaris_Assets.csv, it is located in the root directory of the ATC FTP server).
The retrieved file is processed via a relevant RemoteFileDiscoveryConfiguration assigned to the RemoteFile responsible for retrieving the asset flat file. Such RemoteFileDiscoveryConfiguration entry must have a Polaris assets processing script (found here) assigned as a parse data script.
All the PULL attempts are recorded via the GeneralDiscoverySyncHistory domain with the jobType being REMOTE_FILE_REQUEST (the targetAddress field will also say that the remote file interaction was GET).