Defra publishes a list of software that can be used to report receipts of waste to the Digital Waste Tracking Service. The list was last updated on 23 October 2026, and it includes Crystal Clear Logic Limited — Sentinel.

We are pleased to be on it. We also think it is worth being clear about what the listing means, because it is easy to overstate.

What the listing means

To be listed, a provider must integrate with the Report receipt of waste API and complete Defra’s Production Approval Test (PAT) scenarios. Providers then self-certify that their software meets the digital waste tracking requirements, and state which of the scenarios their software does not support.

For Sentinel, that means our integration has been built and tested against the service’s API, and we have self-certified it on that basis.

What it does not mean

The listing is not Defra approval or endorsement of any product. Defra says the list is not exhaustive and that buying software is at your own risk. And it does not make a site compliant: each receiving site remains responsible for meeting the regulations, whichever software it uses.

Questions to ask any listed provider

Because the list does not show the detail, it is worth asking providers directly:

  • Which of the 14 PAT scenarios does your software not support, and do any of them apply to my site?
  • How are rejected submissions reported, and how are they fixed?
  • How are corrections sent after a receipt has been accepted?
  • What do you store about each submission, and can I see it?

We are happy to answer all of these for Sentinel.

How Sentinel reports receipts

Each load is recorded once at the gate. That record produces the waste transfer note and is submitted to the service, and the tracking ID returned for each receipt is stored against the transaction. Submissions run automatically, and site staff can see the status of every receipt — submitted, rejected with the reason, or waiting to be resent — from Sentinel’s internal portal.

If you’d like to talk through how Sentinel would handle your site’s receipts, get in touch.