In EASA, what is Panel 12? Is this just the same as Panel 10?
Reading through CM-SWCEH-001, the Background section is identifying the EASA system panels, one of which is identified as the primary panel for certification requirements for the system being developed. My understanding of Panel 10 is that it serves as a secondary panel for some of those requirements.

The document defines Panel 10 as:


  The EASA panel in charge of software and AEH aspects of certification.
  This panel includes at least one software and AEH expert (the
  coordinator) and, depending on the size of the project, may include
  additional software and AEH experts.


I would say that it is not a typo, with Panel 12 being the System Saftey panel.