Default customization number and pc companion

hi, curently i have the commercial&journalists customization number (1270-4007).
Which customization number will a ftf have when I download the files via with pc companion and create the ftf with flashtool?
The original customization was Generic DE but now it has changed. So will pc companion download a Generic DE or something else?
Sony Xperia ZL C6503 10.4.1.B.101 rooted locked BL