adobe_prtk.exe Return Code = 19

Hallo,

I'm trying to license Adobe Acrobat 2017 for a Citrix 7.6 provisioning environment. When I run:

adobe_prtk.exe --tool=VolumeSerialize --generate --serial=<SN> --leid=V7{}AcrobatESR-17-Win-GM --regsuppress=ss --eulasuppress

The serial number is from a TLP License program.

I get a return code 19.

I'm Using Adobe Provisioning Toolkit Enterprise Edition for CS 6 (Windows).
I've tried using LEID=V7{}AcrobatESR-12-Win-GM      (same error)

Please help.