Using Item Substitution in Dynamics 365 Supply Chain Management

Introduction

Supply chain disruptions, material shortages, and discontinued items can bring production or order fulfillment to a halt. To stay resilient, organizations need the ability to quickly switch to alternative materials or products without compromising planning accuracy. Dynamics 365 Supply Chain Management (D365 SCM) supports this through item substitution, a feature that allows the system to automatically propose or apply substitute items during master planning.

This blog explores how item substitution works, why it matters, and how Planning Optimization uses substitution rules to maintain supply continuity.

What Is Item Substitution?

Item substitution allows planners to define alternative items that can replace a primary item when it is unavailable. Substitutes may be:

• Equivalent materials

• Different vendors’ versions of the same item

• Updated or successor products

• Temporary alternatives during shortages

Substitution rules help ensure that production and sales can continue even when the preferred item cannot be supplied.

How Item Substitution Works in D365 SCM

When master planning runs, Planning Optimization checks whether an item is short or unavailable. If substitution rules exist, the system:

1. Identifies valid substitute items

2. Applies priority rules to determine the best alternative

3. Generates planned orders using the substitute item

4. Continues planning without interruption

This automated logic helps planners avoid manual intervention and ensures continuity in supply and production.

Key Capabilities

• Automatic substitution during master planning

• Priority-based substitution rules

• Support for multiple substitute items

• Integration with BOMs and production planning

• Improved resilience during supply shortages

• Ability to maintain planning accuracy even when items are discontinued

Step-by-Step Overview of the Item Substitution Process

Step 1: Configure Item Substitution Rules

Navigate to Master planning → Setup → Item substitution and create substitution rules.

Step 2: Assign Substitute Items

Specify which items can replace the primary item.

Step 3: Set Substitution Priorities

Define priority levels so the system knows which substitute to use first.

Step 4: Run Master Planning

Execute Planning Optimization. The system evaluates shortages and applies substitution rules.

Step 5: Review Planned Orders Using Substitutes

Check planned orders to confirm that substitute items were used appropriately.

Common Use Cases

• Raw material shortages requiring temporary alternatives

• Discontinued items replaced by newer versions

• Supplier issues requiring alternate sourcing

• Multi-source procurement strategies for risk mitigation

Conclusion

Item substitution is a powerful tool for maintaining supply chain continuity in Dynamics 365 Supply Chain Management. By defining substitute items and allowing Planning Optimization to apply them automatically, organizations can reduce disruptions, improve planning flexibility, and ensure smoother production and fulfillment processes.

Item Substitution Process Flowchart

graph TD
    A[Start] --> B[Identify Item Shortage]
    B --> C[Check Substitution Rules]
    C --> D{Valid Substitute Available}
    D -->|Yes| E[Select Substitute Item]
    D -->|No| F[Generate Exception]
    E --> G[Generate Planned Order with Substitute]
    G --> H[Continue Planning]
    F --> H
    H --> I[End]