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

# ValidationError

> Individual validation issue object nested inside HTTPValidationError.detail.

# ValidationError

Each entry in `HTTPValidationError.detail` describes one validation failure.

## Key fields

* `loc`: where the validation issue happened, such as `["header", "x-api-key"]`
* `msg`: human-readable explanation
* `type`: machine-readable validation category
* `input`: offending value when the framework includes it
