Creates a new design segment (solar array) within an existing design. A design segment represents a grouping of solar modules configured with specific parameters such as azimuth, tilt, and shading characteristics.

Business Context: Design segments are used to define different arrays within a single solar installation. Each segment can have different orientations, tilt angles, and shading conditions, allowing for accurate modeling of complex roof structures and optimized energy production calculations.

Important: The associated design's project must be in "NEW" status to create segments. Projects in progress require creating a new primary design to update specifications.