Understanding and Resolving NASSCO Issues in Inspections

Last updated: April 15, 2026

NASSCO validation issues can prevent inspections from being completed or exported. This guide outlines the most common causes and how to resolve them.

Common NASSCO Issues and Solutions

1. End Code Timing Issues

One of the most common issues occurs when the final AMH (Assessment of Manhole) or end code is placed too close to—or exactly at—the end of the video.

How to resolve:

  • Enter the final AMH (or other end code) before stopping the recording

  • Pause briefly, then complete the inspection

  • Ensure a 1–2 second buffer between the final code and the end of the video

2. Missing Required Fields

Certain NASSCO codes require additional fields to be completed for validation.

How to resolve:

  • Confirm all required fields and measurements are filled in

  • For codes like ISSRL, percentage fields may be optional, but completing them helps ensure accurate grading

3. Zero NASSCO Ratings

If an inspection shows a zero NASSCO rating, it typically means:

  • No defect codes were recorded during the inspection

  • Only non-graded codes were used (e.g., AMH, MWL, AMN/MSA)

Note: This is expected behavior for pipes in good condition with no observable defects.

How to View NASSCO Issues

To identify and review NASSCO issues:

  1. Navigate to the inspection grid view

  2. Apply the “With Issues” filter

  3. Locate inspections flagged with a NASSCO issue indicator

  4. Open the inspection to view detailed validation errors

Note: If an inspection shows a NASSCO issue indicator but no specific error is visible, contact Support. This may indicate a technical issue that requires further investigation.

Best Practices

  • Leave a 1–2 second buffer between your final code and the end of the video

  • Review all required fields before completing an inspection

  • For imported videos, ensure timestamps are correctly mapped

  • Validate inspections prior to export to catch issues early

Need Additional Help?

If you're unable to resolve a NASSCO issue, contact Support with the inspection link. Our team can help identify the root cause and guide next steps.