SCCS Delta ID (SID)

An SCCS delta ID (SID) is the number used to represent a specific delta. This is a two-part number, with the parts separated by a dot (.). The SID of the initial delta is 1.1 by default. The first part of the SID is referred to as the release number, and the second, the level number. When you check in a delta, the level number is incremented automatically.