Why the test app exists
The Transit Test Application is HMRC's trader-facing sandbox. It accepts IE015 submissions without touching live movements and returns the full NCTS 5 message range so your integration can rehearse both success and rejection paths.
Access
Access is via Government Gateway with credentials tied to an authorised EORI. Getting user assignment right inside the organisational account is what unblocks a first-week go-live.
The wider context is in the iCustoms NCTS 5 testing environment guide.
What to rehearse
- Happy path: IE015 → IE028 → IE029.
- Rejection path: IE015 → IE056 with field pointers.
- Refusal path: IE015 → IE051 or IE055.
- Arrival: IE007 → IE043 → IE044 → IE045. ## Ship without surprises
Watch a demo to see a pre-integrated NCTS 5 platform.
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