1. Use a test credential
Staff issue a test credential. The secret is shown once. Prefix and host must both be sandbox.2. Create a basic submission
The example company and applicant are synthetic.status=received. Sandbox billing is always not_billable.
Repeating the same external_reference with the same body returns 200 and the same submission_id. See Idempotency.
3. Poll status
submission_id from the create response.
4. Production is not yet live
The intended production host ishttps://api.terabusinessfinance.com. There is no READY production API deployment and Supplier API production traffic is disabled. Do not point live credentials there yet.
When production is enabled, Tera will issue a live credential. Use that host only, and do not reuse sandbox secrets. See Key rotation.