Locking the shared stream
Before you build components in the integration stream or feature-specific
development stream, lock the stream to prevent developers from delivering
work. This ensures that you are dealing with a static set of files.
Note: It is possible that a developer could be in
the process of completing a deliver operation when you lock the stream. This
scenario could result in some files associated with an activity not being
checked in, which, in turn, could break your build operations and produce
bad baselines. You may want to create a script that checks for deliveries
in progress, and run the script before you lock the stream.