## protocols.dao.UniqueConstraintViolationError

<span id="hexkit.protocols.dao.UniqueConstraintViolationError"></span>


Raised when attempting to insert a resource violated a uniqueness constraint.


Usage

``` python
protocols.dao.UniqueConstraintViolationError(
    *,
    unique_fields,
)
```


This does not apply to the default unique index automatically applied to the ID field.