Use the URL field to define the relative path of your webpage (for example, /home or /projects/new-project) where your content is published.
You can configure field properties and set a default URL pattern for entries of a specific content type.
You can:
Tip: Use the Instruction Value to provide examples such as /about or /blog/title to guide contributors when filling out the field.
Note: You can’t set URL field properties for content types set to Single.
After you configure this field in a content type, it appears as shown below:

Note: You can only add the URL field at the parent level. It cannot be added inside modular blocks or group fields.
Use the Content Management API to prevent duplicate entry URLs across your stack.
To enforce unique URLs using the API, perform the following steps:
If a duplicate URL is detected, the URL field displays an error and prevents publishing until a unique URL is entered.
Additional Resources:
To enforce unique entry URLs via API, refer to the Add Stack Settings API request.