If SCM is not its proper place then what are disadvantages?

If SCM is not its proper place then what are disadvantages?

Software configuration management (SCM) is one of the five KPA required for an organization to be at CMM level 2. That means, according to SEI, effective project management is not possible without having a proper SCM function in place.

The basic idea behind SCM is to manage and control change. As mentioned by Bersoff, no matter where you are in the system life cycle, the system will change, and the desire to change it will persist throughout the life cycle. It is therefore essential that we manage and control it in a fashion that this continuous change does not convert into chaos.