One of the benefits of working in XML is that Paligo can validate your content whenever you save a topic. So you can be confident that your topics have a valid XML structure that is consistent and can be easily exported. The validation can be enabled or disabled for each topic and there are three different types you can use:

To find out more about these different types of validation, see Validation Rules.


We strongly recommend that you have Paligo XML validation and Paligo recommended validation enabled in your topics. Disabling them could mean that features in Paligo do not work as intended and Paligo may run slowly.

The option to disable these features is designed for those occasions where you need to save the content, and will fix the validation problems later. For example, if an import produces invalid content or the person who encounters the validation error is not the person who will fix it.

If your content complies with the rules of validation, it can be saved. But if it breaks the rules, it cannot be saved, and instead, Paligo displays an error message. You will need to fix the XML before it can be saved (or disable the validation rules that are being broken).

If you have tried to save a topic, but Paligo has detected a problem and displayed a validation error message, see Invalid Content.

To find out how to choose what validation is used, see Turn Validation On or Off for a Topic.

To use your own Schematron file to apply extra validation rules, see Upload Schematron Files to Paligo.