Sales and Operations Planning (S&OP) is essential for aligning strategic plans with daily operations. However, the dynamic nature of modern Collaborative Network organizations presents challenges due to uncertainties and risks. This research aims to fill this gap by creating a maturity model to manage uncertainties in the S&OP process. A literature review was conducted, examining six key dimensions: Process, Tools, People, Objectives, Decisions, and Key Performance Indicators (KPIs). The review uncovered gaps and limitations in current research on uncertainty management in S&OP, underscoring the need for a maturity model for Collaborative Network organizations. As a result, a three-stage maturity model was developed to evaluate Collaborative Network organizations’ S&OP practices, providing guidance to manage uncertainties within the S&OP process. The study highlights the need for future research to develop well-defined procedures for effectively addressing uncertainties, including scenario planning methodologies and decision-making frameworks that account for uncertainties.