Comment # 1 on bug 1111351 from Johannes Meixner

FYI from the cups RPM changes (excerpts):
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Fri Jan 16 16:00:20 UTC 2015 - tchvatal@suse.com
...
- Use upstream service and socket files to allow more working tools
.
.
.
Wed Feb 26 15:20:02 CET 2014 - jsmeix@suse.de
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- Clean up of systemd unit files (bnc#857372):
  Make it working again as simple and secure as it worked
  all the time in the past by providing only one single
  systemd unit file cups.service...
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In SLE12 we have that cups.service
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[Unit]
Description=CUPS Printing Service
After=network.target

[Service]
ExecStart=/usr/sbin/cupsd -f

[Install]
WantedBy=multi-user.target
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