From the Matomo website or from within the admin panel, offer the possibility to paste the URL to a tracking call.
The result of the submitted URL should return the status code (ideally 200 or 400) and, in the case of malformed URLs (code 400), provide details on which parameters contain errors or missing values.
Example recommendations could include:
- Site ID missing
- eCommerce items formatting issue
Example from Google Analytics:
Hit validator