Best Practices

    From Excel to Supply Chain Planning in 12 Weeks

    nPlan
    2026
    12 min read

    Introduction

    Digitizing supply chain planning requires well-structured steps to ensure success. This guide provides a roadmap for companies looking to migrate from manual processes to optimized strategic planning.

    The process is organized into three major phases: Discovery (evaluation and selection), Delivery (12-week implementation), and Expansion (scaling and maturing). This article focuses on the Delivery phase.

    Discovery

    Assessment, POC, ROI and Business Case

    Delivery

    12 weeks of implementation

    Expansion

    Improve, scale, and promote

    Team Allocation

    The timeline is designed to guide each team member in their roles and responsibilities, organized into four stages: Specify, Develop, Validate, and Capture Value.

    Supply Chain Team

    Provides essential data, ensures operational alignment, and reviews business rules.

    IT Team

    Technical integration support, data security, and system compatibility.

    Stakeholders

    Oversee strategic alignment, approve milestones, and validate project direction.

    Consultant

    Guides methodology, advises on best practices, and ensures adherence to timeline.

    Methodology — 12 Weeks

    Below is the week-by-week breakdown of the implementation project:

    WEEK 01Specification

    Project Kick Off

    Stakeholder presentation, objectives, team, preliminary timeline, and sharing of integration and security guides.

    WEEK 02Specification

    Business Blue Print

    Factory visit, structured interview, conceptual workshop. Definition of specific objectives, flowchart, requirements, and action plan.

    WEEK 03Development

    Integration

    Integration development prioritizing Demand Forecast, Master Data, BOM, Inventory, and Production Routing.

    WEEK 04Development

    Master Data Review

    Analysis of item attributes, resource lists, structure validation, times, and alternative manufacturing routes.

    WEEK 05Development

    Process Review

    Review of Procurement, Maintenance, Sales, Inventory, PLM, and OEE processes to ensure data supports planning.

    WEEK 06Development

    Customization

    Segmentation models, inventory policy calculations, planning algorithms, and dashboard customization.

    WEEK 07Validation

    Demand and Supply

    Validation of demand input data, phasing strategy, and supply and inventory data review.

    WEEK 08Validation

    Segmentation & Inventory Policy

    Review of ABC classification, FG/WIP/RM inventory policy, and logging of positive and negative validations.

    WEEK 09Validation

    Infinite Plan

    Plan validation without capacity constraints. Lot size simulation, multi-level needs, and lead times.

    WEEK 10Validation

    Finite Plan

    Gradual introduction of capacity constraints, calendars, exceptions, and alternative resources.

    WEEK 11Value Capture

    Dashboards

    Scenario preparation and dashboard usage during planning meetings to explore different strategies.

    WEEK 12Value Capture

    Order Generation

    Purchase and production order generation based on validated scenario. Gradual introduction starting with test environment.

    Conclusion

    The 12-week reference serves as a baseline for simple projects. Adjust the approach and timing according to your company's needs.

    The tools are in your hands — turn theory into action and take your supply chain to the next level.