250 The Method Framework for Engineering System Architectures
elements (such as from system to subsystems, from current subsystem to newly identified
sub-subsystems, or from current subsystem to architectural structure). Document this allo-
cation in a forward and reverse requirements trace (e.g., as metadata in the requirements
repository or tool, as metadata in an architecture repository or tool, or in a requirements
traceability matrix).
9. Baseline the architectural representations. “Freeze” the architectural representations by
placing them under configuration control so that the impact of future architecturally signifi-
cant changes must be analyzed before making the changes is authorized by the configuration
control board. i