For project management purposes, you can assign WBS Codes for each item in a job bid. Work Breakdown Structure Codes (also known as WBS Codes) are codes related to a specific Work Breakdown Structure; a hierarchical schema used by project managers to help divide projects into manageable deliverable items. Work Breakdown Structures are usually either divided by deliverable-oriented, or phase-oriented projects. This window is used to enter WBS codes based on the metric required