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GET
/
v1
/
wtn
/
{reference}
Retrieve WTN
curl --request GET \
  --url https://api.example.com/v1/wtn/{reference} \
  --header 'Authorization: <authorization>'

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Retrieve WTN

Retrieves a previously generated Waste Transfer Note by its unique reference. WTNs are scoped to the organisation that created them. You cannot retrieve another organisation’s WTNs.
Requires authentication via Authorization header. See Authentication.

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Request

Method: GET Path: /v1/wtn/{reference}

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Headers

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Authorization
string
required
Bearer token with your API key, e.g. Bearer wc_live_your_key

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Path Parameters

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reference
string
required
The WTN reference returned when it was created (e.g. WTN-2026-0325-A7X9)

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Response

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Success Response (200)

Returns the full WTN object as shown in the POST /v1/generate-wtn response, including producer, carrier, waste, destination, duty of care, and compliance objects. 
{
  "reference": "WTN-2026-0325-A7X9",
  "status": "complete",
  "producer": {
    "name": "ABC Office Fit-out Ltd",
    "address": "45 High Street, Bournemouth, BH1 2AA",
    "sic_code": "43320"
  },
  "carrier": {
    "registration_number": "CBDU217016",
    "business_name": "ACME WASTE SERVICES LTD",
    "tier": "upper",
    "verified": true,
    "expiry_date": "2027-01-15"
  },
  "waste": {
    "description": "Broken plasterboard from office refurbishment",
    "ewc_code": "17 08 02",
    "ewc_description": "Gypsum-based construction materials",
    "is_hazardous": false,
    "quantity_kg": 2500,
    "container_type": "skip"
  },
  "destination": {
    "name": "South Coast Recycling Ltd",
    "address": "Industrial Estate, Poole, BH15 1NF",
    "permit_number": "EPR/AB1234CD"
  },
  "duty_of_care": {
    "producer_identified": true,
    "carrier_verified": true,
    "waste_classified": true,
    "destination_provided": true,
    "all_checks_passed": true
  },
  "compliance": {
    "is_compliant": true,
    "flags": [],
    "warnings": []
  },
  "transfer_date": "2026-03-25",
  "created_at": "2026-03-25T14:32:00Z"
}

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Error Responses

CodeHTTPWhen
WTN_NOT_FOUND404Reference doesn’t exist or belongs to a different organisation
{
  "error": {
    "code": "WTN_NOT_FOUND",
    "message": "No Waste Transfer Note matches the given reference.",
    "status": 404
  }
}

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Example

curl https://api.wastecheck.co.uk/v1/wtn/WTN-2026-0325-A7X9 \
  -H "Authorization: Bearer wc_live_your_api_key_here"