The Open Group publications deal with technology at the leading edge of open systems development. Occasionally errors or inconsistencies are uncovered during implementation and demand a change to the published document. Only significant changes are affected. These are reported by means of individual corrigenda referenced to a specific specification or guide.
Technical Corrigendum No. 2 (TC2) is the second Technical Corrigendum produced by the Austin Group for the Base Specifications Issue 7, that are the core specifications of the Single UNIX Specification, Version 4, and addresses defect reports submitted up until August 2015. This Technical Corrigendum is being incorporated into the 2016 Edition of the Single UNIX Specification, Version 4 (technically identical to IEEE Std 1003.1, 2016 Edition).