# XMLValidate
Uses a Document Type Definition (DTD) or XML Schema to validate an XML text document or an XML document object.
Returns keys status (boolean), errors (array), fatalerrors (array) and warnings (array)
## Method Signature
```
XMLValidate(XML=[any], validator=[string])
```
### Arguments
| Argument | Type | Required | Description | Default |
| ----------- | -------- | -------- | ------------------------------------------------------------------------------------------------------------------ | ------- |
| `XML` | `any` | `true` | The XML text document or XML document object to validate. | |
| `validator` | `string` | `false` | The DTD or XML Schema to use for validation. If not provided, the DTD declaration within the XML document is used. | |
## Examples
### Validate against an XML Schema
Validates that note.xml is valid according to the schema note.xsd.
[Run Example](https://try.boxlang.io/?code=eJyryM0JS8zJTEksSdVQUMooKSkottLXLy8v1ys3Lk7OyM%2FPKdZLzs%2FVr8jN0c%2FLL0nVAzKUdIhTWZyipKCpFxziGBIabM0FAPhjJN4%3D)
```java
xmlValidate( "https://www.w3schools.com/xml/note.xml", "https://www.w3schools.com/xml/note.xsd" ).STATUS;
```
Result: false
### Additional Examples
```java
validator = "
";
xml_stream = "
Alice
Bob
Reminder
Here is the message you requested.
";
xml_document = XmlParse( xml_stream );
dump( xmlValidate( xml_document, validator ) );
```
## Related
* [XMLChildPos](/boxlang-language/reference/built-in-functions/xml/xmlchildpos.md)
* [XMLElemNew](/boxlang-language/reference/built-in-functions/xml/xmlelemnew.md)
* [XMLFormat](/boxlang-language/reference/built-in-functions/xml/xmlformat.md)
* [XMLGetNodeType](/boxlang-language/reference/built-in-functions/xml/xmlgetnodetype.md)
* [XMLNew](/boxlang-language/reference/built-in-functions/xml/xmlnew.md)
* [XMLParse](/boxlang-language/reference/built-in-functions/xml/xmlparse.md)
* [XMLSearch](/boxlang-language/reference/built-in-functions/xml/xmlsearch.md)
* [XMLTransform](/boxlang-language/reference/built-in-functions/xml/xmltransform.md)
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