> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prefect.io/llms.txt
> Use this file to discover all available pages before exploring further.
# validation
# `prefect.utilities.schema_tools.validation`
## Functions
### `is_valid_schema`
```python theme={null}
is_valid_schema(schema: ObjectSchema, preprocess: bool = True) -> None
```
### `validate`
```python theme={null}
validate(obj: dict[str, Any], schema: ObjectSchema, raise_on_error: bool = False, preprocess: bool = True, ignore_required: bool = False, allow_none_with_default: bool = False) -> list[JSONSchemaValidationError]
```
### `is_valid`
```python theme={null}
is_valid(obj: dict[str, Any], schema: ObjectSchema) -> bool
```
### `prioritize_placeholder_errors`
```python theme={null}
prioritize_placeholder_errors(errors: list[JSONSchemaValidationError]) -> list[JSONSchemaValidationError]
```
### `build_error_obj`
```python theme={null}
build_error_obj(errors: list[JSONSchemaValidationError]) -> dict[str, Any]
```
### `process_properties`
```python theme={null}
process_properties(properties: dict[str, dict[str, Any]], required_fields: list[str], allow_none_with_default: bool = False) -> None
```
### `preprocess_schema`
```python theme={null}
preprocess_schema(schema: ObjectSchema, allow_none_with_default: bool = False) -> ObjectSchema
```
## Classes
### `CircularSchemaRefError`
### `ValidationError`