---
pdfexport: true
module: Electronics
timetoread: True
tutorial: deepdive
alias: tutorials-step-validate-sub-materials
glightbox: True
---

# Tutorial: Step Validate Sub Materials

## Objective

Learn how to validate sub-materials during track-out to ensure correct material hierarchy and traceability.

---

## Step 0: Validate Preconditions

Before performing track-out validation, ensure:

- Feature is enabled:
    - `/SMT/ValidateSubMaterials/IsEnabled = True`

- Step Type is correctly configured:
    - Matches `/SMT/ValidateSubMaterials/StepTypeTrigger`

- Materials:
    - Have sub-materials
    - Are not top-level materials
    - Require validation (`/SMT/ValidateSubMaterials/IsEnabled/ = True`)

---

## Step 1: Prepare Material for Track-Out

- Move the material to a step where validation is required

- Initiate the **Track-Out** operation

- During track-out, the validation screen is automatically displayed

- Use a scanner (recommended) or manual input

- Scan materials according to expected structure

![Validate Sub Materials](images/validatesubmaterials.png)

---

### Scenario A: 3-Level Structure (Work Order > Panel > Board)

- Scan materials **in sequence**:
    - Panel, followed by Board(s)

- Ensure each scan:
    - Matches the expected level
    - Belongs to the correct parent

- Observe system feedback:
      - Green: valid scan
      - Red: invalid scan

---

### Scenario B: 2-Level Structure (Work Order > Board)

- Scan boards in **any order**

- Ensure all required boards are scanned

---

## Step 4: Resolve Validation Errors (if any)

Common issues during scanning:

- Incorrect material type
- Material does not belong to parent
- Duplicate scan
- Missing required materials
- Quantity exceeded

Correct errors by:

- Re-scanning correct materials
- Completing missing scans

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## Step 5: Complete Track-Out

- Proceed once all materials are validated (all green)

- Track-out is completed successfully

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## Expected Result

- All sub-materials are validated against their parent
- Material hierarchy is confirmed
- Track-out proceeds only after successful validation

---

## Frequent Configuration Questions

### Why can't I proceed with Track-Out?

Ensure that all required materials have been validated and that all necessary scans have been completed before performing the Track-Out operation.

### Why am I frequently receiving validation errors?

Verify the following:

- The materials are being scanned in the correct sequence, especially in a three-level hierarchy scenario.
- The material hierarchy is correctly configured and reflects the expected parent-child relationships.

### Why am I getting duplicate scan errors?

Ensure that each material is scanned only once during the validation process.