V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SCCS
       Source Code Control System (Unix, AT&T, CM)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SCCS
       Specialized Common Carrier Service


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

SCCS
       Switching Control Center System


The Free On-line Dictionary of Computing (30 December 2018):

SCCS

    Source Code Control System: a popular source code
   management system found on Unix since early versions.

   Unix manual page: sccs(1).

   (2011-12-16)