In software system engineering, a joint acquirer-supplier review conducted to finalize software configuration item (SCI) requirements so that the software developer can initiate the next step in the software development process. The SSR is conducted when SCI requirements have been sufficiently defined to evaluate the developer's responsiveness to and interpretation of the system/segment level technical requirements. A successful SSR is predicated on the developer's determination that the software requirements specification and interface specifications form a satisfactory basis for proceeding into the preliminary design phase.