Windchill REST Services > Windchill REST Services Domain Capabilities > Customizing Domains > Extending Domains
  
Extending Domains
To extend a PTC domain, mirror the domain folder structure from the PTC configuration path to the custom configuration path. Only the folder structure is mirrored. Copies of .json or .js files are not created. After the folder structure is mirrored, customizers decide what do they want to extend in the PTC domain, and create the required .json and .js files to extend domain definitions.
Windchill REST Services supports the following types of domain extensions:
Adding type extensions of Windchill types to PTC Domains
Adding custom properties to entities in PTC Domains
Adding custom navigation between entities in PTC Domains
Adding new functions to PTC Domains
Adding new actions to PTC Domains