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

# Update custom pricing

> Update mutable fields on an existing custom pricing row.

Updates mutable custom pricing fields. This endpoint requires an Admin API key and records an audit log entry.

## Request

```json theme={null}
{
  "id": "00000000-0000-0000-0000-000000000000",
  "price_per_unit_usd": 0.012,
  "effective_to": "2026-07-01T00:00:00.000Z",
  "notes": "Updated vendor list price."
}
```

## Response

```json theme={null}
{
  "ok": true
}
```

## Notes

* Omitted fields are left unchanged.
* Explicit `null` clears nullable fields such as `effective_to` and `notes`.
* A missing row returns a validation-style 404 response.