iControl have requested we not provide a help topic on connecting with them as they want to provide this to you directly. You will therefore need to contact either the reseller or iControl directly.
Update - iControl users who require handling of the 'Location ID' field in iControl can now upload and handle these Location ID's from within Lightyear.
Head to Settings > Inventory > Inventory / POS Settings
Tips on uploading iControl Supplier Cards & Location ID's:
The file needs to be a CSV file with 2 columns.
Below are the same CSV file, one viewed in Excel and the other in Notepad.
When you upload the file you need to say YES it has a header row and for the file format choose: '2 Columns - Card ID, Supplier Name' (if your file is displayed with Card ID in 1st column).
To learn how to export goods to iControl, please view this article: Inventory Tab