> ## Documentation Index
> Fetch the complete documentation index at: https://docs.terabusinessfinance.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Contact corrections

> Narrow, audited updates to working contact fields on a basic submission.

Use contact correction when the applicant's working name, telephone, email, or preferred contact method was captured incorrectly. Requires `supplier_submissions:correct`.

The original submitted payload stays immutable. Only the working snapshot changes.

## Allowed when

* `level` is `basic`
* The submission is not `duplicate_not_accepted`, `rejected`, or closed
* Promotion has not started
* Tera has not recorded a successful first contact

## Correctable fields

`first_name`, `last_name`, `telephone`, `email`, `preferred_contact_method`.

You cannot change `external_reference`, level, funding amount, purpose, or commercial outcome through this operation.

## Example

```bash theme={null}
curl -sS -X POST \
  "$TERA_SUPPLIER_BASE_URL/v1/supplier-submissions/11111111-1111-4111-8111-111111111111/contact-corrections" \
  -H "Authorization: Bearer $TERA_SUPPLIER_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "operation_idempotency_key": "correct-northbridge-1001-01",
    "expected_revision": 0,
    "first_name": "Amelia",
    "last_name": "Hart",
    "telephone": "07700 900124",
    "email": "amelia.hart@example.test",
    "preferred_contact_method": "phone"
  }'
```

After an Application exists, field changes use Tera’s Application amendment path, not this endpoint.