# EditWarrantyInput

input type

Edit-input for a Warranty. Every field optional, at least ONE required; supplied fields REPLACE The ONE edit is the serial-number stamp (typed at the counter or later; re-stampable — every value stays in the history); everything else is the engine’s snapshot or a transition stamp.

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `serialNumber` | [String](/types/#scalars) `String!` | yes | The unit’s serial number (1..128 characters). |

## Used by

- [updateWarranty](/reference/warranty/updateWarranty/)